Thomas the Tank Engine, the beloved children's favorite and the Island of Sodor's best loved train, returns with his friends for these episodes of his his long running show. Sir Topham Hatt has three requirements for the engines that run on his railway: they must always be Responsible, Reliable, and Really Useful. Unfortunately for Sir Topham, this is not always the case. Later, Percy gets a personal tour of Mr. Jolly's Chocolate Factory.