Two-year-old Mia grows up in an orphanage until the wealthy Hall family takes her home, and she becomes the darling of the entire household. Yet her father, Oliver, suffers from severe depression after past trauma and has long locked himself away in his bedroom, refusing to see anyone. Mia has no idea what depression is—she only knows she finally has a father. Uninhibitedly, she acts spoiled, makes mischief, and bursts into his room again and again; her innocence and clinginess slowly break open the walls Oliver has built around himself. Healed by her presence, Oliver gradually steps out of the darkness, and father and daughter rebuild a warm, close bond.
