A train is on its maiden voyage across the country, and first-class passenger Will Everett is about to embark on an adventure. Will ends up with a key to a train car containing priceless treasures; he becomes the target of sinister figures from his past. So Will joins a traveling circus, enlisting the aid of Mr. Dorian, the ringmaster and Maren, a girl his age who is an escape artist. With villains fast on their heels, can Will and Maren reach Will's father and save the train.