Fireman Sam: Treehouse Trouble/Mandy At Sea/Danger by the Double/Dog Versus Sheep/Alien Bug Hunt

It's a very hot day in Pontypandy and Joe has invented many solar-powered gadgets including a ridiculous-looking hat with a fan on it. / Mandy wants to be a round-the-world yachtswoman but when her mast breaks she finds herself stranded at sea. / James and Sarah will not stop competing. When a fire starts in the forest they are too busy trying to out do each other to realize they are in danger. / When Woolly the sheep slips his paddock, Derek, Gareth, James and Sarah find out that Nipper is not a natural sheepdog after all! / Getting competitive over new game "Alien Bug Hunt" Norman James Sarah and Mandy take a boat out to sea to find the last Alien Bug but run into trouble when James falls overboard!