Zane and Zoey serve as the last line of defense between the real world and the nightmare creatures of the Dreamworlds. Controlled by the evil Icela, the nightmares have come to life and are threatening to break through to the real world. Zane and Zoey, 14-year-old twins, can travel into the Dreamworlds - the realm where humans dream. Supercomputer ZEUS provides the means, the twins provide the courage. Only new school friends Tucker and Patel share Zoey and Zane's secret adventures. Evil forces in the Dreamworlds, Icela, Nodd & Druul, unleash Momoks, nightmare monsters to haunt our dreams and turn us into Dreamwalker zombies. Zane and Zoey must defeat the monsters in the Dreamworlds and, with Tucker and Patel's help, keep the chaos in the real world under control.