It’s a cold, snowy day in Chuggington and every available chugger is heading out to plough – except for Chatsworth, who is going for a rest after ploughing all night, and Hoot and Toot, who are too inexperienced to be out in the snow. Koko and Harrison head off as a team, Harrison boasting there isn’t a drift that can stop him!

The show’s own verdict is on its page.