Fireman Sam: Hot Air/Lost in the Caves

It's a very hot day in Pontypandy and Trevor Evans refuses to accept that his old bus may not make it up the mountain. When the engine overheats Trevor ignores Norman's advice. / The Pontypandy Pioneers go exploring in some mountain caves. Mandy is interested in bats but Norman is terrified at the prospect of bats flapping their wings at him.