Episode 1
“How are you going to fight tomorrow? It starts tomorrow." After losing the cassette, Ui-Gyeom meets Yoon-Ki and their normal life is shaken up.
Series
ONE: High School Heroes
ONE: 하이스쿨 히어로즈
2025EndedSouth Korea
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What's it about?
A former model student, pushed by domestic abuse and bullying, joins a group that stands up to school violence and defends its victims.
Where to stream?
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Availability data partly provided by JustWatch via TMDB.
Cast
Lee Jung-ha
이정하
Kim Eui-gyeom
8 episodes
Kim Do-wan
김도완
Kang Yoon-ki
8 episodes
Kim Sang-ho
김상호
Kim Seok-tae
8 episodes
Kim Joo-ryoung
김주령
Myeong Da-bin
8 episodes
Shin Jun-seop
신준섭
Nam Seung-Sik
8 episodes
Lee Chan-hyeong
이찬형
Sung-Wook
8 episodes
Shin Jae-whi
신재휘
Lee Ki-Yoon
8 episodes
Lim Sung-kyun
임성균
Kim Seung-joon
8 episodes
Yuk Jun-seo
육준서
Lee Geol-jae
8 episodes
Yoo Hee-je
유희제
Choi Ki-soo
8 episodes
Lim Hyun-tae
임현태
Choi Hong-il
8 episodes
Hong Min-gi
홍민기
Kim Nam-hyeop
8 episodes
Shin Hyun-soo
신현수
Kim Su Gyeom [Eui Gyeom's brother]
8 episodes
Ha Mheen
하민
Kim Ui-gyeom Aunt (Eps 3)
1 episode
14 people — scroll sideways
Crew
Director
Lee Seong-tae
Episodes
Season 1 — 8 episodes · from 05/30/2025
Page 1 of 1 · Episodes 1–8
Episode 2
“Fighting is a talent, after all.” After a fight with Seung-joon, he encounters an unexpected accident.
Episode 3
“I don't want to give in, not to them...” The resolve to fight back. Despair, visions, and an unexpected hand lead him on.
1 guest appearance
Ha Mheen (Kim Ui-gyeom Aunt (Eps 3))
Episode 4
“The problem is there are too many bad guys in the world." Anger with nowhere to go and shaky justice. Yun and Yi decide to “revolutionize.
Episode 5
“Us? High School Super Heroes!!” That’s the name they just came up with. Masked Wigyeom and Yunghi begin their work as High School Super Heroes.
machine translated
Episode 6
“That’s enough. We have to be different from them.” The achievements of the high school superheroes. As the out-of-control Ui Kyum faces Yun Ki, who wants to stop him, Choi Ki Soo appears.
machine translated
Episode 7
“You used me to get revenge?” Yu Ki’s past and the trust that was destroyed. Ui Gyeom and Yu Ki prepare for the final battle.
machine translated
Episode 8
“This is my first flight.” Geijam encounters everything. The High School Super Heroes are back on the street as the song plays again.
machine translated
Image gallery
Posters (11)
Stills (13)
Images © their respective rights holders · Source: TMDB