Assassin Honoka Hitoshi is the last one left of her group, along with her boss and teacher Kenta Juro. Honoka goes to a mansion to eliminate her target, but runs into another assassin, Taku Hiroku. Honoka is surprised when she finds Taku already in the mansion, and the target dead. He then follows her around, eliminating her targets. The two assassins eventually fall in love and sneak around behind her sensei's back.