監督: Rob Silvestri
トーマスの支線が工事のために一時閉鎖され、トーマスは助っ人としてビルとベンの働くクレイ・ピッツに送られた。そんな時、トーマスはクレイ・ピッツで謎の巨大な足跡を発見するも、地すべりによってその足跡を見失ってしまう。翌日、トーマスはパーシーに昨日見た足跡の事を話す。それがソドー島に住むモンスターが残した物だと信じて疑わないパーシーは怯えながら走り出し、やがて奇妙なものに遭遇する。
Mark Moraghan
Narrator / Thomas' Driver (voice)
Ben Small
Thomas / Troublesome Trucks (voice)
Keith Wickham
Edward / Henry / Gordon / James / Percy / Salty / The Fat Controller / Workmen (voice)
Teresa Gallagher
Emily / Annie / Clarabel (voice)
Jonathan Broadbent
Bill / Ben (voice)
Steven Kynman
Porter / Dock Manager (voice)
Clive Mantle
Gator (voice)
Tim Whitnall
Timothy / Reg (voice)
オリヴィア・コールマン
Marion (voice)
Matt Wilkinson
Kevin / Cranky (voice)
Mike Grady
Sir Robert Norramby (voice)
Bob Golding
Workmen (voice) (uncredited)
Mark Moraghan
Narrator / Thomas' Driver (voice)
Ben Small
Thomas / Troublesome Trucks (voice)
Keith Wickham
Edward / Henry / Gordon / James / Percy / Salty / The Fat Controller / Workmen (voice)
Teresa Gallagher
Emily / Annie / Clarabel (voice)
Jonathan Broadbent
Bill / Ben (voice)
Steven Kynman
Porter / Dock Manager (voice)
Clive Mantle
Gator (voice)
Tim Whitnall
Timothy / Reg (voice)
オリヴィア・コールマン
Marion (voice)
Matt Wilkinson
Kevin / Cranky (voice)
Mike Grady
Sir Robert Norramby (voice)
Bob Golding
Workmen (voice) (uncredited)
Mark Moraghan
Narrator / Thomas' Driver (voice)
Ben Small
Thomas / Troublesome Trucks (voice)
Keith Wickham
Edward / Henry / Gordon / James / Percy / Salty / The Fat Controller / Workmen (voice)
Teresa Gallagher
Emily / Annie / Clarabel (voice)
Jonathan Broadbent
Bill / Ben (voice)
Steven Kynman
Porter / Dock Manager (voice)
Clive Mantle
Gator (voice)
Tim Whitnall
Timothy / Reg (voice)
オリヴィア・コールマン
Marion (voice)
Matt Wilkinson
Kevin / Cranky (voice)
Mike Grady
Sir Robert Norramby (voice)
Bob Golding
Workmen (voice) (uncredited)