It's the hottest day of the year on Sodor and the blistering heat is causing the tracks to buckle and bend. Flynn and Belle Team Up to put out a fire caused by a glass bottle and Thomas has an idea to stop the Tracks buckling. Meanwhile, James' passengers prove that no one likes a show off, strong-willed Daisy becomes star of the show and Connor slows right down. Danger blows in for Skiff during a terrible storm, the Miniature Engines get their chance to prove how "woolly" useful they are and, at the building site, there's much mucking about with Max and Monty!