Mack Moon dreams of being the first kid in space. So imagine his surprise when he discovers that his three regular pets--a goofy Labrador named Pickles, a tough gray cat called Lady, and a goldfish dubbed The Fish--are actually undercover agents. They belong to a secret agency called the Planetary, Enforcement, Tactics, and Stealth, AKA the P.E.T.S. When the True Form of Evil, aka a ferret named Barbara (and yes, she gave herself that nickname), crash lands into Mack's hometown, the P.E.T.S. must spring, jump, and swish into action to stop her.