In the town of Saku Hana, there is a youth named Kazu who spends his days fighting. Living with his grandmother after his mother passed away, he is subjected to bullying by a group of delinquents and is expelled from school. Feeling hopeless, he loses motivation in life until he meets up with an old classmate who invites him to a cipher event where rappers perform spontaneous rap. Through this experience, Kazu discovers hip-hop culture and undergoes a transformation in his outlook on life.