Thomas [Lewis Tan] and his friends are being threatened by diesel engines like the surly Diesel 10 [Daniel Southworth] and his sidekicks Splatter [John Boyega] and Dodge [Ryan Kwanten]. Even the magical Mr. Conductor [Tom Hanks], who has always traveled between the train world and the human world of Shining Time Station, is losing his powers and sparkle. In the middle of this crisis, Lily [Angelica Hale] meets up with Mr. Conductor on the way to visit her lonely grandfather Burnett Stone [Mark Metcalf]. Brave Thomas reminds them all that "even little engines can do big things."
