From DreamWorks Animation, the studio that brought you "How to Train Your Dragon" and "Ruby Gillman, Teenage Kraken", Two years after a car accident that killed her husband, Karen has difficulties as a single mother. She and her children, Emily and Navin, move to the old house of Karen's grandfather Silas near San Francisco. Karen says Silas was a "puzzle maker" who disappeared after locking himself in the house. While exploring Silas's library, Emily finds a stone amulet that had been hidden in a table, and Navin helps tie it around her neck. The amulet begins speaking to Emily in her thoughts, giving suggestions beginning that night.