In Korea, Y/N and her close friends Ahn Su-ho and Yeon Si-eun are constantly pulled into trouble because of their former friend Oh Beom-seok, while a slow-burn romance grows between Y/N and Su-ho as they stand together with their friends against rivals like Na Baek-jin and Geum Seong-je.
Weak Hero is a dark school drama that revolves around bullying, violence, and power structures. At its center is a physically weak but highly intelligent student who fights back against brutal classmates using strategy rather than brute force. The series portrays, without sugarcoating, how violence emerges, spreads, and changes people—realistic, intense, and emotionally gripping.