Terence The Tractor is the 13th episode of the 1st Season .
One autumn day, Thomas meets Terence the Tractor and he teases him about his caterpillar tracks, thinking them ugly. Winter later comes with heavy snow, and Thomas is required to wear his heavy, uncomfortable snowplow. He bumps and bangs all day long, until it needs to be taken off for urgent repair. The following day, the Driver and Fireman find they cannot fix it in time, and Thomas has to do without his plow - much to his delight and relief. But when Thomas runs into a deep snowdrift and gets stuck, he soon finds that both his snowplow and Terence are really useful after all! Terence pulls Thomas free of the snowdrift and Thomas thanks his new friend and his special caterpillars.