Taisou Zamurai follows Joutarou Aragaki, a gymnast nicknamed Samurai, who faces a career crisis.
After an injury and personal loss, Joutarou struggles to maintain his performance and is advised to retire.
He plans to tell his young daughter, Rei, but an unexpected encounter with a strange ninja named Leonardo complicates matters.
Leonardo's presence inspires Joutarou to defy expectations and make a comeback, proving he still belongs in the world of gymnastics.