Najla is a teenage girl who prefers to spend most of her time alone in her bedroom with her beloved doll, Yummy. She refuses to socialize or live like a normal teenager, which makes her older sister, Melly, feel embarrassed and frustrated. Melly repeatedly encourages Najla to leave the house and interact with the outside world, but Najla continues to choose a life inside her own little world. As the days pass, Najla's attachment to Yummy becomes increasingly disturbing. She begins hallucinating and believes that the doll can talk to her. But the voice coming from Yummy slowly turns into something much more sinister. The doll begins to influence Najla's mind, filling her with hatred toward Melly. As the line between reality and hallucination becomes increasingly blurred, Najla starts to commit dangerous acts. Even Tya, Melly's friend, becomes caught in the nightmare and falls victim to Najla's growing madness.
