Frustrated by yet another call from her husband who's always away on business, Rino destroys the half-prepared meal and takes her anger out on her son. But moved by his gentle and caring nature, she suddenly kisses him passionately. Though shocked at first, the son understands his mother's true feelings and accepts her as a woman. From then on, whenever her husband is away, the son prepares dinner and satisfies her physically as well. A carnal relationship develops between dutiful son and mother, forging a deep bond that transcends the boundaries of parenthood.