Dudley the dog is tired of getting told off, but when he wishes he could sneak some cakes from the kitchen without getting caught, he isn’t expecting to transform into a boy. Danny – his owner – certainly isn’t expecting to find himself back in Dudley’s body and bound for a doggy discipline session in the park, run by the ruthless Rex Power. This time though, the combination of Danny’s boy-brain in Dudley’s dog-body is a winner, as Danny outshines all the other pooches in the park and gets a slot at the local country fair the next day. But Danny’s star turn is about to get him into trouble – because Rex Power isn’t about to let a boy who looks like he’s the one in need of training and his meddling mutt get in the way of winning. Can Danny outsmart Rex Power and win best-in-show?