"Thomas The Tank Engine & Friends" is about the engines on the fictional Island of Sodor Railway. Thomas, Edward, Henry, Gordon, James, Percy, Toby, and Emily make up the "Steam Team". But they aren't the only engines on the line. Recently, new engines like Dennis, Molly, Neville and Rosie have joined the railway. They travel to places like Knapford Station, Brendam Docks, the High Hills of Sodor (home of the Narrow Gauge engines), Farmer McColl's Farm, and they all come home to Tidmouth Sheds at night.
Gator returns to the Island of Sodor after being away for a long time. He is looking forward to seeing his old friend Percy. When Percy hears that Gator is back, he is very excited and immediately heads off to see him. But the two engines keep missing each other. They both have doubts they will see each other, but finally they connect and have a wonderful reunion.
It is a slow day for Gator when he finds himself sitting around with nothing to do. However when Oliver breaks down, Gator is more than happy to help. He collects Oliver's trucks and promises him he will bring them back in the morning. There is another problem when Gator's lamp keeps going out. He knows he will be late so he decides not to stop. Toad however argues that it is not safe. Toad has a light bulb moment, and he comes up with an idea that will help deliver the trucks safely and on time.