A 11 year girl name Karma wants to go sightseeing, but her parents wont let her. When her friend Ciel learns of this she suggest sneaking out to go slay monsters. They have fun but then A monster attacks Silver Island leaving it in shambles. this motivated Karma to be become a hero. now she learned how to slay all the monsters she must train herself as the grim reaper hero to save all creation from monsters tyranny