The mother brings another woman into the house while her husband is away, and when she's no longer receiving attention, she relieves her pent-up sexual desires through masturbation. One day, her son catches her in the act, and instead of stopping, she seduces him, crossing the final line. Feeling her fully grown son's strong body against hers, the mother takes pleasure in his maturity. Deeply immersed in this forbidden, taboo relationship, mother and son fall into a new kind of bond. The illicit emotions between them tangle beyond the boundaries of everyday life, leaving a lasting mark on their hearts.