Helen Flood and Firefighter Penny Morris go on a mountain hike while Fireman Criddington tries to teach Radar the Rescue Dog how to roll over. When the fog rolls in and Firefighter Penny Morris hurts her ankle and she and Helen Flood become lost. Fireman Sam, Radar the Rescue Dog and Tom Thomas come to the rescue.

Norman Price goes fishing with Charlie, Sarah and James. They discover a baby whale heading for the beach and try to stop it, but land themselves into trouble when Norman makes the boat crash into the whale.