The mothers gradually lose their rationality, becoming consumed by carnal desires with their beloved sons. With the husband away on a work assignment, the house is left with only the sexually frustrated son and his mother. One day, the mother discovers adult magazines in her son's room and can no longer suppress her urges, beginning to masturbate. At that very moment, her son walks in and catches her in the act. As the bond between parent and child twists and the line between desire and morality blurs, the son's filial devotion takes an increasingly extreme turn.