Stanley's Party may have come to an end ... but our favorite party animal's back and ready to roll! Stanley knows he's not supposed to leave the yard, but he's dog-tired of it. So when he discovers a way out ... he's gone! A few escapes later, five dogs are on the lam. And with Stanley in the lead, they're off to have the kind of fun you can't find in a yard — chasing tomcats, sampling tasty garbage and soaking fire hydrants. Then, late at night, atop the steepest hill in town, they come upon a mysterious wheeled ... thing. And before you can say “Hot dog!” Stanley's off on the ride of a lifetime!