Honk your horns- toot! toot! It's the traintastic world of Chuggington where eager engines Wilson, Koko and Brewster are learning to become working trains. There's plenty of fun and adventure in store as the trainees prepare a dance routine to celebrate Puffer Pete's 150th anniversary and attend Olwins outward-bound training course. Meanwhile, around the depot, Hodge's attempt to work unsupervised causes chaos on the tracks and a TV documentary finds Emery launching a big for stardom!