It has been several months since her only son moved to Tokyo. Worried about her son, who does nothing but complain on the phone, Mei comes to check on him. While taking care of her son living in a dilapidated room, her love for her child deepens, and they end up connecting their bodies. A relationship like this should never be allowed. Even so, she finds her child, who showers her with pure affection, adorable. A woman's heart wavers between guilt toward her husband and love for her son. To find the answer to her own feelings, Mei goes to see her son once more...