Tatsuya, a former gang leader, seeks a fresh start after juvenile detention but quickly finds himself entangled in a gang rivalry. Amidst the chaos, he forms unexpected bonds with Kaname, a rival gang member, and Chihiro, the sister of a late gang leader, as they navigate the dangerous gang world together.

Ikuto and Ryoma grow close after meeting in juvenile detention. Motivated by Mikuru Asakura's words, they set their sights on the martial arts event Breaking Down, but looming rivalries threaten to derail their dream.