The Frozen Turntable is the twentieth episode of the seventeenth season.
Plot
All the engines come back to Tidmouth Sheds one cold evening to find out that the turntable is frozen and will only point to one shed. Gordon wants the shed, but all the other engines agree that Percy should have the shed. That night, Gordon goes to the shed and sleeps in it, but after another incident with the turntable happens, Gordon can't pull the express.