Rumi Ayase is a mother of one who travels with her son Kenji, recently employed at a foreign securities company. Kenji has been transferred to Los Angeles, and this trip serves as a celebration. Trying to ease her son's sadness over leaving Japan, she acts cheerful and energetic as always. In turn, Kenji responds with equal consideration. As night deepens, their emotional connection intensifies, leading them into a passionate and intimate encounter filled with warmth and desire.