An individual's affair with his loved ones housemaid contributes to a grim consequences. Eun-yi is hired as an aupair for Hae-ra (blessed with twins) and her rich husband Hoon. Nami, the couple's young daughter is being watched by eun-yi's chief task. Eun-yi is eager to connect. Hoon starts to covertly flirt with Eun-yi, enticing her with glasses of wine and also his piano playing, and they eventually begin a sexual partnership. Inspite of the event, Eun-yi is friendly and warm to Hoon wife, Hae-ra. She expresses delight and enthusiasm at the advancement of the pregnancy of Hae-ra.