Thomas mocks Diesel for not being a steam engine, and for being different than the other locomotives. Diesel tries to prove himself in a race against Thomas, but suffers a bridge accident and looses his cargo. Thomas rescues Diesel, and is rewarded with a visit to the rescue center on the mainland. Thomas is placed on a raft and pulled by boat. The chain connecting the raft to the boat breaks during the trip, and a lost Thomas is eventually stranded on Misty Island. His only companions are the "Logging Locos", a trio of locomotives who received unfavorable transfer there for poor behavior. After exploring the island for a while, Thomas learns that there is a tunnel connecting Misty Island and Sodor. Thomas and the Logging Locos attempt to cross the tunnel, but are trapped in a cave-in. Thomas uses his engine smoke to signal for help, and the group are rescued by Percy and Whiff. Once he returns to safety, Thomas learns that Sir Topham Hatt was looking for him and has led a rescue party to Misty Island. Thomas returns to Misty Island and connects with the rescue party. The Logging Loco receive repairs and are welcomed to Sodor. Sodor celebrates the construction of its own "Search and Rescue Center", while the villainous Diesel 10 watches from a distance and monologues threats.