Kevin is a quiet boy. He lives in a quiet house, on a quiet street, in a quiet town. Nothing exciting ever happens to him . . . until Cynthia the Kangaroo hops into his life. Billed as the Mistress of 1,000 Disguises, Cynthia has escaped from the circus to follow her true calling as a comic. But she has her paws full staying one jump ahead of the Twisty Lady and the Strongman, who want bring her back to the circus. Hiding out in Kevin's bedroom, Cynthia becomes convinced that someone is stealing Kevin's parents' inventions. She dons disguise after disguise and keeps Kevin smiling at her jokes, as the two of them set out to ambush the culprit.