The film was produced and distributed by HIT Entertainment with animation production by Canadian-based Nitrogen Studios.

Thomas and Percy take her to the Steamworks where Sir Topham Hatt congratulates her and says they need another fire engine.

Belle suggests a road/rail hybrid fire engine she knows named Flynn and arrangements are made to bring him over from the Mainland.

Feeling left out again, Percy goes back to the Dieselworks the next day and finds out that they lack a working crane.

Forgetting about the hose, Percy takes Kevin to the Dieselworks while Victor is asleep, and Diesel 10 is happy to have a new crane.

Thomas, Percy, and Kevin rally the other engines to take back the Steamworks, where the diesels have wreaked havoc.

Sometime later, Sir Topham Hatt reopens it, and Thomas and Percy tell each they feel most proud when they’re together, signifying that they still remain best friends.