When some of his gerbils escape and he gets in trouble for not paying attention in class, fourth-grader Andy Russell worries about asking if a friend can move in with his family--especially when he learns that his mother is going to have another baby.
Melvil and Dewey, gerbil brothers who live in an elementary school library get checked out for the weekend and are literally shaken up by a horde of misadventures including a bath and being blow-dried.