Fed up with children's unhappiness, the Fairy Council holds a large-scale event known as The Changeling Royale. Fairy godkids all over the world are sent an invitation to participate in this event, where they are pitted against each other on a virtual world. The first three teams and/or individuals who can find a "Devonian Cup" and cross the virtual world's finish line will receive a pass to change Da Rules to their liking. Those that lose, quit, or "die" beforehand are safely transported back to Fairy World to watch the rest of the game and the winners' ceremony. However, there is one catch: all the participants must relinquish their fairies and use only their own skills for the duration of the Royale.
Timmy is sent an invitation, and is initially very excited until he realizes this means Remy is invited too. Meanwhile, a strange, ominous entity makes its presence known.