A man wrongly convicted of conspiracy to commit espionage against the U.S. is offered his freedom if he can rescue the president's daughter from an outer space prison taken over by violent inmates.

Tracy Island not only houses Jeff Tracy and his five sons, but also serves as headquarters for the top-secret International Rescue organization. A criminal mastermind known only as "The Hood" manages to get past the island's security measures and trys to take over International Rescue. His goal is to steal the five most advanced rescue vehicles and use them for his own agenda. With Jeff and his four eldest sons on a mission, there's only one person...

"Its name: Event Horizon. The high-tech, pioneering research spacecraft mysteriously vanished, without a trace, on its maiden voyage seven years earlier. But a weak, persistent signal from the long-missing craft prompts a rescue team, headed by the intrepid Captain Miller, to wing its way throught the galaxy on a bold rescue mission. Accompanying Miller is his elite crew and the lost ship's designer; their mission is to find and salvage the spacecraft....

Ready to rescue! The Sodor Search and Rescue Team is racing to the rescue. Bertie's stuck on the Shake Shake Bridge, Gordon's derailed, and Thomas's firebox is on fire! Watch as everyone's favorite engines brave the rails to rescue their friends. Discover that being heroic is more than having speed and strength. Being heroic is also about teamwork and having a big heart, which puts every Really Useful Engine on the right track.

The team scrambles to make sense of the disintegration of the unit. The unit reunites to rescue Mack and clear their names. Nerve gas is stolen and the team is sent to retrieve it. Jonas tests his daughter's strength and conviction when she decides to enlist. The team deals with a loss and Jonas vows revenge.