Auggie and his magical companions are tending to the Fabled Stables when the building shakes and shudders to make room for a new arrival: the Tattle-Tail。 Auggie and friends travel through the portal to a town called Rainbow’s End in search of this mysterious creature。 Auggie assumes that the Tattle-Tail is in danger， but he learns that it’s actually the town that needs rescuing 。 。 。 from an infestation of Tattle-Tails！
These talking tails have taken over， attaching themselves to every backside in town （including Auggie’s！）。 The Tails tattle on whomever they’re attached to: She picked her nose！ He just double-dipped！ The constant stress of being tattled on has thrown all of Rainbow’s End into chaos！
Soon， Auggie and friends hatch a plan to collect the Tattle-Tails and bring them safely to the Stables—foiling a pair of evil bank robbers along the way。