While on a sleepover, Joe and Sam learn the meaning of a horror story as they get caught up in a real, live nightmare of their own! Join Joe and Sam as they come face-to-face with Frankenstein's monster, and take him back to the nineteenth century to drop him off with his creator, Mary Shelley. Will Joe and Sam fix everything with their time-warping power, or will Mary Shelley's famous monster be erased from history forever?