Eun-yi is an innocent young woman who is hired as an upper class family housemaid, and is tasked to take care of the family's small daughter and her pregnant mother, Hae-ra. But soon enough, the master of the house, Hoon, takes advantage of his social position by slipping into the new housemaid's bed. Soon Eun-yi becomes pregnant by Hoon and wants to keep the baby. This is discovered by the family and Eun-yi is forced by Mi-hee to have an abortion despite the young woman's pleas to let her keep the baby and leave the house. Her forced abortion turns Eun-yi's already fragile mental condition for the worse and she decides to take the matter into her own hands…