Individuals require money for their existence. On a dark night, a robber intrudes into a residence with the intent to take money. However, within the confines of the house is a man far more perilous than he ever anticipated. After being knocked out with a single strike, he regains consciousness in an unknown warehouse. As the confined thief struggles against his situation, the homeowner, Masumi, presents him with a proposition: to make amends for his attempted theft, he must serve as his dog. With no escape in sight, he finds himself living in confinement. What fate awaits this perilous relationship, where madness and obsession become intertwined?