|This article is about the DVD. You may be looking for the episode.|
Calm Down Caitlin is a Malaysian DVD containing four episodes from the seventeenth series.
Thomas, the small, mischievous engine live all of his friends on the Island of Sodor. They all happily work together on the railway. However, not everything goes well all the time and the little blue engine often has to face a lot of unexpected problems. In the end, they can usually congratulate each other on being Really Useful Engines.