Mavis (episode)

Mavis is a Season 3 episode. Mavis is young diesel who has been sent to work at Toby's quarry. Toby is annoyed by Mavis' way of arranging the trucks, and telling her to take them herself. Also she did not listen to his advice on how to deal with the trucks at the junction, dismissing him as an "old fusspot". But when she got into difficulties she needed help from Toby, who rescued her, then she quickly delivered her trucks without her manager knowing.