It has been several months since her only son moved to Tokyo. Concerned after hearing him complain over the phone, Mei went to check on him and found him living in a dilapidated room. As she took care of him, her love for him deepened, leading them to have a physical relationship. Such a relationship is unforgivable. Yet, her son's pure affection makes her cherish him. Mei struggles between her guilt towards her husband and her love for her son. To understand her true feelings, Mei decides to visit her son again…
