Using cutting-edge technology called DHI (Disney Host Interactive), the Disney Imagineers capture the images and voices of Finn Whitman, a young Orlando teen, along with four other kids, then transform them into hologram projections that guide guests through the park. The new technology turns out, however, to have unexpected effects that are thrilling and scary when Finn finds himself transported into his DHI form at night. Is it a dream or reality? Finn and his four DHI friends must do battle with the evil witch, Maleficent, and her Overtakers in order to save Walt Disney World.