'We have to kill him', the wife and her lover thought. When three childhood friends reunite, it doesn't take long before two of them feel the woman's husband is in their way. They push him into a lake, but the boat capsizes and all three are thrown into the water. The lovers reach the shore, but the husband is nowhere. Has he drowned? They decide to wait at a lakeside hotel for his body to be found.
A seemingly "normal" office worker Hiroko has a secret. At home she lives with a prosthetic torso - no head, arms or feet, just body and penis. Hiroko bathes with the torso and she also makes love with the torso at night. Hiroko's secret life is interrupted when her outgoing sister Mina rings her doorbell. Mina is running away from her abusive boyfriend and wants to stay at Hiroko's home