After her husband disappeared upon learning of her pregnancy, she struggled to raise their son alone, facing opposition from those around her. When her son got a job, she felt a pang of loneliness. One day, he invited her on a hot spring trip. The mother, reflecting on her life with pessimism, found herself drawn to her son's comforting presence. A twisted filial love blossomed between them as they sought solace in each other. Her voluptuous, sensual body...his large, impressive manhood...they yearned for each other, opening the forbidden door to incestuous intimacy. A tale of a mother and son, their love both tender and chaotic, entangled in a forbidden embrace.