Feature-length animated adventure following tank engine Thomas (voice of John Hasler) and his locomotive friends. After Thomas is banished for causing some problems on the tracks he comes across a pirate ship and finds himself on the hunt for the lost treasure of Sodor Island. But he will have to race against time in order to stop Sailor John (John Hurt) getting his hands on the treasure. Will he succeed and get back in Sir Topham Hatt (Keith Wickham)'s good books? The voice cast also includes Eddie Redmayne, Jamie Campbell Bower and Olivia Colman.