Maika Hiizumi runs away from home and, having nowhere to go, is coincidentally spotted by Ayumu. Unable to leave her behind, he convinces her to come with him and brings her back to his room. However, fearing his father might find out and report her, Ayumu hides Maika inside a closet. Before long, Ayumu's father discovers her presence and, without letting Ayumu know, takes advantage of Maika's vulnerable situation, freely manipulating and molesting her body as he pleases.