Feature animation of the children's TV series following Thomas and his friends on the Island of Sodor. Thomas travels to the mainland to obtain wood for the new Search and Rescue Centre building. As there is not enough space for Thomas to fit on the boat, he is taken on a raft, attached to the boat by a chain. However, the chain breaks out at sea and Thomas is left to drift to the mysterious Misty Island. While there, Thomas makes acquaintances with the Logging Locos, but can they help him get back to Sodor where his friends are waiting?