Tatsuya, an ex-gang leader, tries for a fresh start but gets entangled in a gang conflict. Unexpectedly, he befriends Chihiro, whose brother was a gang leader, as they navigate the gang world amidst the rivalry.

Ikuto and Ryoma meet in juvenile detention and become best friends, they pursue their dream of participating in the martial arts event Breaking Down. However, rivalries soon turn their dreams into unexpected conflicts.