The story, without the spoilers.
Yeon Si-eun is a top student who looks physically frail and fights with his brain instead of his fists, turning hallways and classrooms into battlegrounds of strategy. In Class 1 he learned the cost of fighting alone when he failed to protect his best friend. In Class 2 he transfers to Eunjang High School carrying that guilt, determined not to let history repeat itself. But the new school has its own gangs, its own hierarchy and its own monsters, led by Geum Seong-je and Na Baek-jin, who do not care how clever Si-eun is. To survive he must do the thing he has always resisted: trust other people. Park Hu-min, Seo Jun-tae and Go Hyun-tak become the allies who stand beside him, and together they turn a lonely war into a shared one. Based on the webtoon Weak Hero, Class 2 premiered on Netflix on April 25, 2025, with all eight episodes released at once. The fights are harder, the stakes are higher, and the friendships matter more.
A little curiosity. A new favourite.
Start with the story, meet the cast, and make room for one more episode.