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Huge footprints in the snow convince Sarah that there's a polar bear in the area. But she and James get into difficulties when they try to photograph it for a local newspaper competition.
Mrs Chen's class make sky lanterns for Chinese New Year, but Norman Price creates a disaster when he lets go of his too early.
When Trevor is driving his bus to Newtown he skids of the road and lands in a nearby lake. Moose decides to look for help and leaves but when Trevor starts a fire to keep the group warm the ice on the lake cracks and Fireman Sam comes to help