Thomas & Friends S02E11 - Percy Takes a Plunge

Based on the story of the same name from The Eight Famous Engines.

At the harbour, Percy is telling Bill and Ben about the time he braved bad weather, using the phrase "Water's nothing to an engine with determination". Henry calls Percy silly, to which he teases him about him staying in the tunnel. Later, Percy wants to see why he is forbidden to pass the danger board on the quay, but soon wishes he hadn't.