Woo A-Jin is living a luxurious life due to her wealthy father-in-law. Everything in her life changes when Park Bok-Ja a mysterious woman who hides a heartbreaking story enters her home to take care of her Father-In-law. She brings a hard time on Woo A-Jin and everyone living in that house. What does this Bok-Ja wants ? Why is she here ? Who murdered her ?