A girl named Camilla gets hit by a bus and gets stuck in a coma for the next two weeks. After that, she goes home and finds a random girl living in her house. When she tries to show her friend, her friend says she sees nothing. At this point Camilla thinks shes going insane until the girl who has been living in her house brings her to a group know as, "the council" and they give her tasks to take care of non-obedient monsters in exchange for cash.