Hundley wants to cool down at the dog beach, but once he gets in the water, he's spooked by a wave and some seaweed. Taking inspiration from new canine companions, George builds Hundley his very own raft to cool off in style. / George has volunteered to be the drummer in the birthday band for the Man with the Yellow Hat's surprise birthday party at Pisghetti's. Almost as challenging as finding his rhythm and playing with others, though, is keeping the birthday secret. Good thing he gets lots of help from unlikely places.