Fireman Sam: Wild Cheese Chase/Whale Watch/Pontypandy Heatwave/Hide and Seek/Bus Trouble

It's the annual Pontypandy Cheese Roll Challenge and Norman really wants the prize - the giant cheese! / When Bronwyn decides she needs to record some relaxing whalesong Charlie offers to take her out on the skiff to find a whale. / Sam and Ben work together to fix a special camera onto the shell of a beautiful blue Leatherback Sea Turtle so that they can see underwater from its point of view. / Trevor takes the girls of Pontypandy to Newtown to see a One Way Street concert. But when the bus skids off the road Mandy still wants to keep going and gets into danger. / Mrs Chen is taking a school trip to the ruins but when Trevor turns up the bus is not running well. Mrs Chen insists that they set off before he can check under the bonnet