On days when her husband is away at work, married woman Nagase Yuri engages in paid encounters through online dating sites. She visits the home of a man she met online, only to find it is an unexpectedly dangerous shared house. Despite sensing an ominous atmosphere, she steps inside. This decision leads to a life-altering ordeal. Once handed over to the man, she is passed among the residents and subjected to relentless abuse, gradually losing all sense of self. Her horrifying downfall leaves readers chilled to the bone.