Daimon High School employs the official K-Fight battle arena for kids to resolve their conflicts through duels. The undefeated K-Fight champion, Ryoko Mitsurugi, a samurai girl, receives a summon from an enigmatic Priestess to safeguard the planet Earth from an impending attack originating from Solvania's alternate universe. Through challenging battles, Ryoko must discern her true power as a samurai warrior, testing her abilities, friendships, and heart.