The Petsitters find themselves in trouble when Matthew, insisting that he knows horseback riding, agrees to exercise an independent-minded pony in his owner's absence.
When Sam and the other members of the Petsitters Club agree to guard Mrs. Makepeace's cat from a cat burglar, they find themselves in the middle of a family feud.
The members of the Petsitters Club find themselves very busy when they agree to take care of a pampered Yorkshire Terrier and the "virtual pup" of a classmate who has to have his tonsils out.
Because neither Sam nor her father realizes that a garter snake dropped off for "petsitting" has escaped, they can't understand Aunt Cynthia's alarming shrieks.
The Petsitters agree to look after the principal's potbellied pig at the school fair, but the job turns out to be more complicated than they had anticipated.
Jovan convinces the other members of the Petsitters Club that rescuing a sad looking donkey standing alone in the field is just as important as exercising a very energetic puppy.
