In a small room, down a short flight of stairs, there lives a little toy train...about to have a BIG adventure! There's an endless world to explore, and awe-inspiring new friends to meet. Mighty Max, Chloe Cogs, Sara Speedster, and Farley Freighter can reach all the best sights, lickety-split. But when the day is done and the sun goes down, will the littlest train find his way home? Calling all train lovers: All aboard!