Mad Dog’s neighbour, Coco the pink poodle, is throwing a pool party on a particularly hot day while her owners are out. During the fun of the party, the dogs notice that Buster, a rude and unfriendly bulldog, is tied up in the sun without water next door. Can Mad Dog and the gang save Buster from a hot and thirsty fate? Naturally, an enticingly cool recipe is included as a delectable canine party treat.