Vivienne and Lydia are half-sisters. Twenty years ago, their parents were brutally persecuted, and young Lydia was sent to an orphanage, where she lived alongside Vivienne. At that time, out of jealousy over the Elsa doll that Lydia held close to her chest, Vivienne stole the doll late one night. The very next day, Lydia mysteriously disappeared, and the two were separated for twenty years.
