

- Cast entries
- 21
- Episodes
- 26
- Locations
- 5
- Food stops
- 1
Synopsis
A concise overview of the premise, tone, and dramatic setup.
Triangle is a Korean drama that examines the complexities of friendship and loyalty among three men. The film, directed by Lee Do-yoon, centers on the bond between Hyun-tae, In-cheol, and Min-soo, whose lives take a drastic turn due to an unexpected incident during a hiking trip. As they navigate adulthood, the trio grapples with the weight of their past and the choices that shape their present.
The narrative unfolds as Hyun-tae, now a struggling firefighter married to a mute woman, and In-cheol, working as an insurance salesman, find themselves entangled in a plan orchestrated by Hyun-tae's mother, who runs an illegal arcade. Their friendship faces a test when a series of misunderstandings and a fateful mistake lead to escalating tensions. Unlike traditional buddy movies filled with action and crime, Triangle presents a fresh perspective on male camaraderie, focusing instead on the emotional intricacies and the consequences of a singular misstep that puts their friendship at risk.
With notable performances by Ji Sung, Ju Ji-hoon, and Lee Kwang-soo, Triangle portrays themes of trust, betrayal, and the enduring nature of friendship, all while providing a poignant commentary on the unpredictability of life.
Why Triangle offers a compelling look at friendship and loyalty
Picture this: three friends standing atop a mountain, the sun setting behind them, casting long shadows on their dreams and aspirations. It’s a moment loaded with potential, yet fraught with the tension of unspoken truths. This is the world depicted in Triangle, a drama that examines the emotional complexities of friendship, loyalty, and the weight of past decisions.
At the heart of the series are Ji Sung as Hyun-tae, Ju Ji-hoon as In-cheol, and Lee Kwang-soo as Min-soo, each portraying characters whose lives take unexpected turns. When an incident during a hiking trip reshapes their trajectories, the bond formed in their youth is put to the ultimate test. Hyun-tae's struggles as a firefighter married to a mute woman add a poignant layer to his character, while In-cheol's career as an insurance salesman draws him into the murky waters of morality when he gets involved in Hyun-tae's mother’s illegal arcade scheme.
What sets this drama apart is its emotional focus. While many shows lean heavily on action and crime, Triangle carves out a niche that examines the subtleties of male camaraderie. The series pulls viewers into an intricate web of misunderstandings that escalate into a full-blown crisis. It forces the characters, and by extension, us, to reckon with how a single misstep can ripple through lives, testing the very fabric of friendship.
The performances are noteworthy. Ji Sung brings a raw vulnerability to Hyun-tae, balancing his fireman duties with the challenges in his personal life. In-cheol’s character, played by Ju Ji-hoon, offers a more pragmatic view on friendship, and the way he navigates his relationship with Hyun-tae showcases the nuances of loyalty amid conflict. Lee Kwang-soo, known for his lighter roles, surprises here by digging deep into emotional turmoil and adding depth to the trio’s dynamic.
Each episode unfolds like a lesson in trust and betrayal, and the show doesn’t shy away from portraying the messiness that comes with navigating adult relationships. Triangle encapsulates the unpredictability of life, illustrating how choices made in youth can haunt us in adulthood. It’s a reminder that friendships can be both a safety net and a source of great tension.
For those who appreciate character-driven dramas that focus on the emotional facets of relationships, this series will resonate. It invites viewers to reflect not just on the friendships we cherish but on the fragility of those bonds when put under pressure. Pay close attention, and you might find that the emotional stakes in Triangle echo your own experiences, lingering long after the final credits roll.
Final verdict: a thoughtful watch for fans of character-driven stories
Triangle has its moments. The show tackles the complexities of male friendships, which isn't always an easy topic to handle. It’s engaging to watch Hyun-tae, played by Ji Sung, and In-cheol, portrayed by Ju Ji-hoon, navigate their tumultuous lives, especially against the backdrop of their childhood bond. The emotional weight of their choices resonates well, even if the plot occasionally stumbles into melodrama.
With 26 episodes to present themes of loyalty and betrayal, viewers might find themselves invested in how these characters evolve. Each misstep feels heavy, and the ripple effects of their past decisions linger throughout the series. While it doesn't have the fast-paced thrills typical of many dramas, it offers a more introspective look at what happens when trust is tested. That focus on emotional nuance could appeal to those tired of action-heavy plots.
However, not everything lands perfectly. At times, the pacing drags, and some viewers might find the slow build frustrating. Still, if you’re drawn to character-driven narratives, there’s enough here to engage your attention.
For fans of Ji Sung or those curious about deeper takes on friendship and loyalty, Triangle has its merits. It might not be for everyone, but it offers a unique perspective that lingers long after the final credits roll. It’s the kind of show you might find yourself pondering over long after you’ve finished watching.
Filming locations
Places connected to scenes, checked against source links before they appear publicly.
- 01
Wat Rong Khun
백색사원(왓 렁쿤)Pa O Don Chai, Mueang Chiang Rai District, Chiang Rai 57000, ThailandWat Rong Khun, also known as the White Temple, is an architectural marvel with a stunning white exterior and intricate details, attracting many visitors.
After a long journey, I finally arrived at the White Temple in Chiang Rai, Wat Rong Khun.blog.naver.com - 02
Kasteel de Haar
하르성Kasteellaan 1, 3455 RR Utrecht, NetherlandsKasteel de Haar is one of the largest castles in the Netherlands, located near Utrecht. It features beautiful gardens and a rich history dating back to the medieval period.
Haarzong (Kasteel de Haar) is one of the largest castles in the Netherlands, located near Utrecht.blog.naver.com - 03
Nahargarh Fort
나하가르성Krishna Nagar, Brahampuri, Jaipur, Jaipur Nagar Nigam Area, Rajasthan 302001, IndiaNahargarh Fort offers a stunning view of the sunset over Jaipur, making it a popular spot for both tourists and locals. The fort's architecture and historical significance add to its charm.
Nahargarh Fort in Jaipur is a fortress built for city defense on the Aravalli hills, located 6 km northwest of the City Palace.blog.naver.com - 04
Doi Chang Coffee
도이창 커피787 Tambon Wa Wi, Amphoe Mae Suai, Chang Wat Chiang Rai 57180, ThailandDoi Chang Coffee is famous for its rich flavor and is located in a beautiful garden setting, making it a perfect spot for coffee lovers.
After another hour of driving, we arrived at DOI CHANG cafe.blog.naver.com - 05
Futakotamagawa
후타고타마가와Futakotamagawa, Tamagawa, Setagaya City, Tokyo 158-0094, JapanThe area around Futakotamagawa is described as a quiet neighborhood with charming alleys, perfect for a peaceful stroll.
Moving to Futagotamagawa, one of my favorite neighborhoods in Tokyo.blog.naver.com
Food & places
Restaurants, cafes, markets, and dishes tied to the drama or the reader's visit path.
- 01Cafe
Triangle Coffee Roaster
Waffle66 Galen St, Watertown, MA 02472, USAThe cafe is known for its quiet atmosphere and delicious coffee, making it a great spot to relax. Many Korean visitors frequent this place, enjoying the coffee and waffles.
A quiet café near Senado Square in Macau, Triangle Coffee Roaster has great coffee!blog.naver.com
More to explore
Step beyond this drama — explore filming sites, food spots, and related titles across the catalog.
Production
Broadcast details, runtime, language, and key production credits.
- Directors
- Choi Jung-kyu최정규
- Writers
- Choi Wan-gyu
Source: TMDB
Cast & characters
Key roles, performers, and character context for quick scanning.
Heo Young-dal / Jang Dong-chulKim Jae-joong김재중
Yoon Yang-ha / Jang Dong-wooYim Si-wan임시완
Jang Dong-sooLee Beom-soo이범수
Hwang Shin-hyeOh Yeon-soo오연수
Oh Jung-heeBaek Jin-hee백진희
Sung Yoo-jinPark Ji-yeon박지연
Ko Bok-taeKim Byeong-ok김병옥
Kim Ok-kyungKim Hye-eun김혜은
Min SuMoon Jung-hyun문정현
Man-kangHong Seok-cheon홍석천
Oh Jung-hee's grandmotherKim Ji-young김지영
Kang JinPark Hyo-ju박효주
Kang Hyun-miJung Ji-yoon
Jang Dong-soo (young)Noh Young-hak
Hwang Shin-hye (young)Kim So-hyun김소현
Yoon Tae-junKim Byeong-gi김병기
Source: TMDB
Lead actors
Lead performer biographies and notable credits.

Kim Jae-joongas Heo Young-dal / Jang Dong-chul
Kim Jae-joong, born on January 26, 1986, is a multifaceted South Korean singer, songwriter, actor, and director. He initially gained fame as a member of the iconic boy band TVXQ!, where he was known as Hero Jaejoong. After leaving the group in 2010 due to legal disputes with their management, he formed the trio JYJ alongside fellow members Park Yoo-chun and Kim Jun-su. As a solo artist, Jae-joong has released multiple albums, achieving significant success both in South Korea and Japan. Throughout his career, Jae-joong has demonstrated his versatility by acting in various television dramas and films. His notable dramas include "Protect the Boss," "Dr. Jin," and "Triangle," showcasing his range as an actor. He has also ventured into hosting, participating in shows like "Travel Buddies" and creating a documentary about his life titled "Jaejoong: On the Road." In 2023, he took a significant step in his career by establishing his own agency, Inkode, where he serves as Chief Strategy Officer. With a rich body of work and a dedicated fanbase, Kim Jae-joong continues to be a prominent figure in the entertainment industry.

Yim Si-wanas Yoon Yang-ha / Jang Dong-woo
Yim Si-wan, born Yim Woong-jae on December 1, 1988, is a prominent South Korean singer and actor. He first rose to fame as a member of the boy group ZE:A and its sub-group ZE:A Five, where he showcased his musical talents. Transitioning into acting, Yim has garnered significant acclaim for his performances in both film and television. He is particularly well-known for his role in the film The Attorney (2013), which was a commercial success, as well as the critically acclaimed television series Misaeng: Incomplete Life (2014). His ability to convey deep emotions and relatable characters has made him a favorite among audiences. Yim also starred in the series Run On (2020), further establishing his reputation in the industry. Recently, he gained international recognition for his performance in the highly popular series Squid Game, appearing in its second and third seasons set to release in 2024 and 2025. His contributions to the arts have earned him a place among the top 200 actors representing the current and future of Korean cinema.

Lee Beom-sooas Jang Dong-soo
Lee Beom-soo is a prominent South Korean actor, born on October 16, 1969. He has established himself as a versatile performer in both film and television, captivating audiences with his dynamic range. Lee gained significant recognition for his roles in popular dramas such as "Singles" (2003), "Giant" (2010), and "On Air" (2008). His performance in "Surgeon Bong Dal-hee" (2007) further solidified his status as a leading actor in the industry. In addition to his television success, Lee Beom-soo has also appeared in the acclaimed series "History of a Salaryman" (2012), showcasing his ability to tackle a variety of genres. With a career spanning over two decades, he continues to engage viewers with his compelling portrayals and remains a respected figure in South Korean entertainment.

Oh Yeon-sooas Hwang Shin-hye
Oh Yeon-soo is a prominent South Korean actress known for her diverse roles in television and film. Born on October 27, 1971, she has made a significant impact on the entertainment industry with her performances. Over the years, Oh has built a reputation for her versatility, showcasing her talent in various genres. With a career spanning several decades, Oh Yeon-soo has captivated audiences with her compelling portrayals in numerous dramas and movies. Her dedication to her craft has earned her a loyal fan base, and she continues to be a respected figure in the South Korean acting community.

Baek Jin-heeas Oh Jung-hee
Baek Jin-hee is a talented South Korean actress, recognized for her diverse roles in both film and television. She begins her acting career with an appearance in the independent film "Finding Mr. Destiny" in 2008, which marks the start of her journey in the entertainment industry. Her breakthrough comes with her role in the hit television series "High Kick: Revenge of the Short Legged," which airs from 2011 to 2012, earning her significant attention. Baek continues to build her reputation with her performance in "Empress Ki" in 2013, a historical drama that further showcases her acting abilities. In addition to these notable works, she stars in the recent drama "The Real Has Come!" in 2023, demonstrating her versatility and continued relevance in the industry. With a career spanning over a decade, Baek Jin-hee remains a prominent figure in South Korean cinema and television.
Where to watch
Availability is grouped by country and provider type.
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TVING
Streaming data via JustWatch through TMDB.
Episodes
Episode stills, air dates, runtimes, and summaries.
Ep 1Episode 12014-05-05 · 60 minJang Dong Soo is a reckless investigator who will do anything to take down a kingpin mobster, even if it means heading back to his hometown and crossing paths with his past.
Ep 2Episode 22014-05-06 · 60 minHeo Young Dal is in deep debt, and finds that the only way to get out of his own messes is to be Jang Dong Soo's informant.
Ep 3Episode 32014-05-12 · 60 minWith a lot of stolen money in his hands, Young Dal and Jang Soo must now tread carefully so that they won't be found by Boss Ki Chan's enemies. Yang Ha finally gets Jung Hee to have a drink with him.
Ep 4Episode 42014-05-13 · 60 minYoung Dal gets in trouble with Ki Chan's enemies, and finds himself caught up against Watanabe. Dong Soo learns more about Go Bok Tae's gangster past that might be tied to his own.
Ep 5Episode 52014-05-19 · 60 minYoung Dal resolves to take over the town of Sabuk. Shin Hye's father makes a special request to Jang Soo that will forever taint his reputation.
Ep 6Episode 62014-05-20 · 60 minShin Hye heads to Sabuk to learn more about Dong Soo. Young Dal moves forward with his plans to take over Sabuk. Yang Ha's secret identity is slowly revealed to more people in the casino.
Ep 7Episode 72014-05-26 · 60 minYoung Dal and Dong Soo reaffirm their alliance even though Young Dal isn't sure if he's completely loyal to the detective yet. Yang Ha takes his place as a director in his father's company.
Ep 8Episode 82014-05-27 · 60 minDong Soo leaves the force, and begins his own investigation on his father's death. Young Dal sets his plans to take over Madam Jang's casino in motion.
Ep 9Episode 92014-06-02 · 60 minAs Young Dal, Dong Soo, and Yang Ha begin to align their loyalties they find themselves on opposing sides with those they believe are their allies.
Ep 10Episode 102014-06-03 · 60 minYoung Dal pulls off a successful feat that makes Yang Ha hate him even more, and makes Jung Hee fear for his life. Just as Dong Soo learns the truth of his mother, Go Bok Tae learns about how Dong Soo is connected to his dirty past.
Ep 11Episode 112014-06-09 · 60 minYoung Dal and his friends find themselves in jail, and Yang Ha makes a new dangerous ally that could ruin Dong Soo's revenge.
Ep 12Episode 122014-06-10 · 60 minA lot of things change in Sabuk while Young Dal serves his time in jail. New allies are made, and old friends become new enemies for Young Dal and Dong Soo.
Ep 13Episode 132014-06-16 · 60 minYoung Dal and Dong Soo forge ahead with their plans, and Young Dal decides to delve into his buried past with Shin Hye's help.
Ep 14Episode 142014-06-17 · 60 minShin Hye puts the pieces together on Young Dal's past. Dong Soo gets a new opportunity to take down Chairman Yoon. Jung Hee tries to find a way out of Yang Ha's grasp.
Ep 15Episode 152014-06-23 · 60 minWhen Dong Soo is stabbed and ends up in a coma, Young Dal takes matters into his own hands to seek revenge against those who ruined his family.
Ep 16Episode 162014-06-24 · 60 minYoung Dal takes the position as a new director in Dae-Jung Group, much to Yang Ha's displeasure.
Ep 17Episode 172014-06-30 · 60 minYang Ha is demoted after he fails to impress his father. Young Dal pushes through with his business plans but there's a traitor in his circle.
Ep 18Episode 182014-07-01 · 60 minWhen Jung Hee gets kidnapped by Han Myung Jae, Young Dal and Yang Ha work together to get her back, but only one of them ends up being the true hero in her eyes.
Ep 19Episode 192014-07-07 · 60 minDong Soo comes to terms with the mounting evidence that Yang Ha is his brother. Young Dal concocts a plan to get rid of Myung Jae for good.
Ep 20Episode 202014-07-08 · 60 minMyung Jae falls right into Young Dal's trap, and everyone rallies to get rid of Myung Jae from Sabuk. Jung Hee is affected by the fallout resulting from Yang Ha's bad business decisions.
Ep 21Episode 212014-07-14 · 60 minYang Ha will do anything to get back to his father's good graces, but it ends up going against Young Dal and Dong Soo's plans.
Ep 22Episode 222014-07-15 · 60 minYoung Dal and Dong Soo hurry to save Yang Ha from being arrested, even though Yang Ha wants nothing to do with his biological brothers.
Ep 23Episode 232014-07-21 · 60 minYang Ha tries to oust Young Dal from Dae Jung Group but his father has already enlisted the help of the bloodthirsty and ambitious Hyun Pil Sang.
Ep 24Episode 242014-07-22 · 60 minHyun Pil Sang and Go Bok Tae step up their plans to eliminate the three Jang brothers, while an unexpected death brings the broken family closer together.
Ep 25Episode 252014-07-28 · 60 minYang Ha's life is in danger when Hyun Pil Sang and Go Bok Tae use him as a means to hit Dong Soo and Young Dal where it will hurt the most.
Ep 26Episode 262014-07-29 · 60 minThe final act begins with a death that will change everyone's lives forever.
Source: TMDB
Videos
Trailers, OST, interviews, making clips, reviews, and recommendations.
Trailers & teasers
OST
Interviews & making-of
Reviews & recommendations
Source: YouTube
Gallery
Posters, backdrops, and stills from the drama.
Source: TMDB



