Clyde and Stephanie are husband and wife, but unfortunately, by some reasons, they, not yet divorced but live in different places. That weekend, Clyde takes their two children to a yard sale. Since they entered the place, Em, who is Clyde's daughter, is impressed by an old wooden box, and Clyde buys the box for Em, but it seems no way to open the box. That night, while sleeping, Em hears whispering, she somehow opens the box, wears the ring in the box, and that's when strange things happen. Em becomes solitary, sinister, violently attacks classmates, yelling, not knowing anything. Stephanie and Hannah, who is Em's sister feel bad things are happening to Em, so they take Em to take the MRI and see the demon's face next to Em's heart. On the
