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🔔 Notify me about new seasonsSynopsis
With the aid of unexpected friends, a gifted but introverted student confronts bullies and violent foes — unaware of how dangerous his world will become.
Themes
Episodes
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- E1 Episode 1Next upNov 18, 2022 · 44 min · ★ 8.5
Synopsis
Si-eun is a model student who is always at the top of his school. Because he only cares about his studies, he has no friends at school. Young-bin, a boy in Si-eun's class, is annoyed by Si-eun's cynical attitude. On a mock test day, Young-bin decides to use Bum-seok, a new student, to mess with Si-eun's test.
Guest stars: Lee Hyun-bae (Yeong-bin's Friend), Yu Seong-yong (Baseball Player), Jo Ah-young (Yeong-bin's Friend)
- E2 Episode 2Nov 18, 2022 · 43 min · ★ 8.7
Synopsis
Young-bin wants revenge on Si-eun for putting him in the hospital by hiring a couple of thugs he knows. Meanwhile, Si-eun gets closer to Soo-ho and becomes friends. Later, Soo-ho comes to Si-eun's rescue when he gets confronted by Young-bin and his thugs.
Guest stars: Oh Su Yun (Yeong-bin's Mother), Jang Dae-woong (Kim Won-seok)
- E3 Episode 3Nov 18, 2022 · 41 min · ★ 8.1
Synopsis
When Gil-su sees his boys beaten up to a pulp, he gets furious and asks who did it. Young-bin lures Si-eun, Bum-seok, and Soo-ho and takes them to Gil-su. Gil-su threatens them to bring him 15 million won in three days. Si-eun asks Young for advice and information on Gil-su.
Guest stars: Jang Dae-woong (Kim Won-seok), Kim Hyeok-jong (Police Officer 1)
- E4 Episode 4Nov 18, 2022 · 38 min · ★ 8.5
Synopsis
Si-eun sees Soo-ho's blood on the floor and calls Young-yi for help. Gil-su tells Seok-dae to come, so Young-yi follows him with her GPS tracking app on. Meanwhile, Soo-ho and Bum-seok are tied up by Gil-su's gang.
Guest stars: Kim Tae-jun (Police Officer 3)
- E5 Episode 5Nov 18, 2022 · 39 min · ★ 8.8
Synopsis
While hanging out in a karaoke room with his friends, Bum-seok runs into the bullies from his previous school. Soo-ho makes them apologize, but Bum-seok isn't happy with Soo-ho ordering him around. Si-eun becomes more worried about Bum-seok who seems to be getting more unstable.
Guest stars: Pyeon Hae-jun (Kim Hui-jun), Park Sang-eun (Jeong-chan's Friend)
- E6 Episode 6Nov 18, 2022 · 41 min · ★ 8.0
Synopsis
Bum-seok befriends with Jeong-chan and Tae-hoon, he reeks of alcohol every day. Si-eun thinks Bum-seok is being used by Jeong-chan and Tae-hoon. He also thinks Bum-seok is behaving that way because he is lonely. Si-eun wants to help Bum-seok, but Soo-ho thinks he's done enough. Meanwhile, Bum-seok pays Woo-young to beat Soo-ho on his birthday.
- E7 Episode 7Nov 18, 2022 · 37 min · ★ 8.7
Synopsis
Si-eun gets beaten up by the guys Bum-seok paid to beat up Soo-ho. Si-eun gets seriously injured, but he doesn't tell Soo-ho about it to protect Bum-seok. Soo-ho finds out later and decides to confront Bum-seok. Bum-seok pays Woo-young again to beat up Soo-ho.
Guest stars: Jang Jae-ha (Child Yeon Si-eun)
- E8 Episode 8Nov 18, 2022 · 43 min · ★ 8.8
Synopsis
Si-eun and Young-yi get anxious as they can't get hold of Soo-ho for too long. After Si-eun finishes his exams, he hears the shocking news. Meanwhile, Bum-seok's dad tries to make Bum-seok go study abroad.
Guest stars: Yoo Su-bin (Choi Hyo-man), Byun Joong-hee (An Su-ho's Grandmother), Kim Hyun (School Principal), Lee Hae-woon (Homeroom Teacher)
Cast & crew
Created by Yoo Soo-min, Han Jun-hee
Park Ji-hoon
Choi Hyun-wook
Hong Kyung
Ryeoun
Choi Min-yeong
Yoo Su-bin
Cha Woo-min
Bae Na-ra
Lee Min-jae
Lee Jun-young
Cha Se-jinVideos
Trailers
Images · 14
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Reviews · from TMDB members
terrapongJan 8, 2023
An entire TV show about school bullying. Performances are ok, but there is very little to recommend here as it's been done a thousand times before.
DeanApr 18, 2025
What a masterpiece. Weak Hero is a rare 10/10 where not a single second is wasted. Unlike cringe high school romances, this is a raw, brutal look at the cycle of violence, friendship, and the sting of betrayal. Park Ji-hoon’s performance is chilling—seeing a 'weak' student use his brain and surroundings to dismantle bullies is incredibly satisfying. It’s fast-paced, emotionally heavy, and absolutely essential viewing. You must be a very heartless and boring person to not be m… Read more
oved by this story. Beyond the acting, this show proves why Korean media is lightyears ahead of the West right now. While Hollywood is busy ruining every franchise with forced diversity, 'box-ticking' agendas, and corporate crap that kills the soul of the story, Korea focuses on what actually matters: the plot and the characters. They don’t lecture you or try to be 'inclusive' just for the sake of a trend; they just tell a damn good, gritty story. It’s a complete, tight arc that doesn't drag on for 50 seasons of filler. If you want real quality without the Western 'identity' garbage, this is the gold standard."
