Jenna wakes in an abandoned asylum wearing a glued-on princess mask and must recover missing storybook pages through deadly escape room-style challenges while hunted by the Dragon, a masked figure with weapons stitched to his hands. She finds her friend Rebecca and other costumed victims dead. Orchestrated by Dr. Storybook's twisted Storybook Program, Jenna kills the Dragon but refuses to shoot, only to be captured and transformed into the new Dragon.