Thomas & Friends: The Great Discovery (2008)

The railway is preparing for the celebration of the Sodor Day holiday, and Thomas and James are racing to the wharf to be given a special job by Mr. Percival. Thomas wins, and is sent into the hills to collect lumber with Duncan. Thomas teases the little engine, who decides to pay Thomas out by sending him on a fool's errand - telling him that an old, disused line will lead him back to the wharf faster. After avoiding an old, collapsing bridge, Thomas takes another route at the old junction, and as he journeys farther down the line, he comes across an old overgrown town...