At 25 years old, Shizuka Yamauchi works as a housekeeper while Makiko Mitarai, who is 46 years old, is an amateur model and impeccable homemaker. Despite their unfamiliarity, the two have a history that Shizuka seeks to rectify in order to vindicate her mother. However, Makiko harbors her own secrets, and Shizuka must be cautious in her pursuit of the truth to avoid being harmed.