When trouble strikes at the Blue Mountain Quarry, Thomas is sent to help his Narrow Gauge engine friends. While shunting and hauling, he catches a glimpse of a small engine trying to hide, yet no one will provide any clues to the engine's identity. Thomas is determined to get to the bottom of the mystery but discovering the truth is harder than he imagined! Will Thomas be able to save his new friend? Or will the mysterious engine be sent away from Sodor forever? Travel on an exciting journey with Thomas and his friends in his biggest movie ever, tracking down clues, discovering lost engines, and revealing the power of friendship!
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Michael Angelis
Narrator (voice)
Ben Small
Thomas / Toby / Rheneas / Owen (voice)
Keith Wickham
Edward / Henry / James / Percy / Skarloey / Sir Handel / The Fat Controller / The Thin Controller (voice)
Teresa Gallagher
Emily / Mavis / Annie / Clarabel (voice)
Kerry Shale
Diesel (voice)
Steven Kynman
Paxton / Peter Sam (voice)
Matt Wilkinson
Rusty / Winston / Rocky / Cranky / Kevin / Merrick / Quarry Worker / Dock Workers (voice)
David Bedella
Victor / Cuban Dock Workers (voice)
Michael Legge
Luke (voice)
