Snow Patrol

It's a cold day, and Chug Patrol need more salt from the mines to keep Chuggington tracks safe in the icy weather. They escort the chuggineers up the mountain to the quarry, where the salt is mined. When they get there, Speedy is loading bags of salt onto a wagon using a pulley system. Jackman leaves Wilson in charge of things while he escorts Brewster back with the first load of salt. But when Jackman is detained by an accident, Wilson is the only Chug Patroller on the mountain - and when Fletch is trapped under a snowdrift, he has to think on his wheels. Trying to rescue Fletch by pulling uphill doesn't work. Then Wilson remembers the system Speedy used! The chuggers devise their own pulley and, using their weight going downhill, pull Fletch free.