Maria is divorced and a single mother. Her son has grown up, got a job and is living alone. Looking back on her life, she feels lonely if her life as a woman ends like this, when her son invites her on a trip to a hot spring as a birthday present. Her son gets an erection when he sees his mother's voluptuous, huge breasts. Maria loses herself in her son's erect penis and passionately takes it into her mouth. Watch this forbidden mother-son incest story where the two women seek each other out, exposing their instincts to the pleasure of a woman.