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. The camera comes in handy when Norman and Mandy, who are out turtle-spotting alone in a boat, get in trouble at sea.

Sarah, James and Lily are out with their parents and Trevor, being guided along Pontypandy Mountain by Moose. Sarah and Lily wander off and find themselves trapped along the rocky edges of the mountain. But a cute little lamb comes to their rescue!