Tired of the same old yard and the same old routine, Stanley, the good-time hound who starred in Stanley's Party (2003), longs for something new. Then he discovers a "weensy" hole near the fence, and he quickly digs himself to the freedom of the open street. After liberating his pals from their respective yards, Stanley and his pack of overjoyed mutts experience "the kind of fun you can't find in a yard": peeing on fancy cars, chasing cats, savoring garbage. The biggest thrills come after the group finds a collection of wheeled delights--a skateboard, a tricycle, a shopping cart--but the fun comes to a crashing halt when the police get involved, convincing Stanley that maybe the backyard isn't so bad after all.