Reina, a college student whose mother has remarried and started a new life with her father-in-law. Reina should have forgiven her very kind father-in-law, but one day, everything changed completely. I witnessed my father-in-law sneaking into Reina's room and devouring her underwear. However, I did not want to be born to make my mother sad. That day, Reina always kept her distance from her father-in-law, but her grandmother was sick and her mother went back to her hometown for a while. And a cunning and lewd father-in-law intervened as Reina tried to escape to a friend's house.