The town play is sure to be a hit, with Katie as a princess and Marshall playing as the back half of a dragon. But when Marshall takes a nap during rehearsal break, he wakes to find a real, fire-breathing dragon guarding a sleeping Katie in the Lookout Tower! Ryder calls in the Air Patroller and puts a plan in action. / Rocky wakes up with Farmer Yumi's three little piglets curled up beside him. It seems something, or someone, ate the pigs' straw house. The pups build a new one, out of sticks this time, only to have it disappear too. Not only does the Paw Patrol have a brick house to build, but they have a mystery to solve too.