Ichiban Kasuga, a low-level Yakuza member looking to prove his self-worth, and follows him and his motley crew of unlikely allies as they attempt to rise from rags to riches in this modern human drama.

Ichiban Kasuga, a low-ranking grunt of a low-ranking yakuza family in Tokyo, faces an 18-year prison sentence after taking the fall for a crime he didn't commit. Never losing faith, he loyally serves his time and returns to society to discover that no one was waiting for him on the outside, and his clan has been destroyed by the man he respected most.

Ichiban sets out to discover the truth behind his family's betrayal and take his life back, drawing a ragtag group of society’s outcasts to his side: Adachi, a rogue cop, Nanba, a homeless ex-nurse, and Saeko, a hostess on a mission. Together, they are drawn into a conflict brewing beneath the surface in Yokohama and must rise to become the heroes they never expected to be.