Left alone during her husband's long business trip, a lonely mother copes with her emotional emptiness by masturbating to soothe the ache of her mature body's longing. Witnessing his mother's vulnerability, her son—still reeling from a recent heartbreak and consumed by twisted affection—finds himself drawn to her ripe, fifty-year-old body, pulled into a whirlpool of forbidden desire. As the mother's warmth collides with the son's inner turmoil, their relationship takes a dark and inevitable turn toward incestuous passion.