Gozo married Emi when she was a single mother and worked relentlessly to support her and her daughter Konatsu, leaving no time for family life. Emi eventually ran away with another man, leaving him alone with the now-adult Konatsu. After sinking into alcoholism, a drunken Gozo mistakes Konatsu for her mother and sexually assaults her, beginning a deeply inappropriate relationship between teacher and adult former student in this dark role-play drama.