Momochi Himari, despite being an orphan, unexpectedly inherits an old house. Despite warnings she receives on the Momochi House being haunted, she decides to go live there anyway. She soon learns that the house is already occupied by three somewhat strange men, Aoi, Yukari and Ise, all of whom may or may not possess supernatural abilities to combat evil spirits. What happens when stubborn Himari decides to stay, despite being told to leave?