Because of her past, 17-year-old Rio lives her days filling the emptiness in her heart with money--until one day, she meets a university professor named Kouki and falls in love.

A school teacher visits the home of a boy who's been absent from school for a long period of time, unaware of the horrific tragedy which occurred in the boy's household many years ago.

Seeking revenge after being framed for murder 14 years ago, Sachiko changes her appearance and infiltrates a popular influencer's home as a babysitter.