A Treehouse

S1, E18: Pat has to deliver a hibernation box to Amy for Dora the Doormouse. Meanwhile the children are looking for a clubhouse for their superhero club. Pat collects the shed from the Sorting Office and uses his helicopter for the delivery but disaster strikes when the shed lands in a tree! When it turns out the shed is not what Amy had ordered, Pat saves the day by making a special home for Dora with cardboard boxes and the shed becomes a special treehouse for the superhero club.