Episode 1
Episode 1
51m8.0 / 10
“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.
Where to watch ONE: High School Heroes
TV series
ONE: High School Heroes
20251 season8.1 / 10
A former model student, pushed by domestic abuse and bullying, joins a group that stands up to school violence and defends its victims.
Availability
Not streaming in United States
ONE: High School Heroes premiered May 30, 2025. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
A former model student, pushed by domestic abuse and bullying, joins a group that stands up to school violence and defends its victims.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
Episode 2
46m8.0 / 10
“Fighting is a talent, after all.” After a fight with Seung-joon, he encounters an unexpected accident.
Where to watch ONE: High School Heroes
Episode 3
Episode 3
47m8.0 / 10
“I don't want to give in, not to them...” The resolve to fight back. Despair, visions, and an unexpected hand lead him on.
Episode credits
Guest stars Ha Mheen
Episode 4
Episode 4
41m8.0 / 10
“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.
Where to watch ONE: High School Heroes
Episode information updated Jul 22, 2026
Available now in United States
What to watch instead
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More about ONE: High School Heroes
Cast
Lee Jung-haKim Eui-gyeom
Kim Do-wanKang Yoon-ki
Kim Sang-hoKim Seok-tae
Kim Joo-ryoungMyeong Da-bin
Shin Jun-seopNam Seung-Sik
Lee Chan-hyeongSung-Wook
Shin Jae-whiLee Ki-Yoon
Lim Sung-kyunKim Seung-joonProduction details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 8
- Original language
- Korean
- Original title
- ONE: 하이스쿨 히어로즈
Networks & production
wavveSouth Korea
Themes
based on webcomic or webtoonviolence in schools