The Kingdom Keepers are the main protagonists in the book series. The team of five was formed and chosen by Wayne Kresky, a Disney Imagineer, after the teens auditioned and modeled to become DHIs, interactive hologram hosts, at Walt Disney World. The leaders of the Keepers, Finn Whitman, is the first to discover that when the kids fall asleep, they cross over into the parks as their DHIs. The Kingdom Keepers, as they are later named, exist to fight against the evil Overtakers, Disney villains who are trying to take over the parks, led by Maleficent. The group recruits fairlies Amanda and Jessica as DHIs in Disney In Shadow.