Chi realizes that she is lucky to be taken in by her grandparents after her father dies - but life above an antique store in Slade's Corners, Wisconsin is not exactly the place a teenage girl wants to be.
One day while going through boxes of her father's boyhood stuff, she comes upon a rare old set of dragon puzzles... all of which are missing pieces. Her grandmother recalls the fantastic tales Chi's father would tell about his travels to lands of dragons and adventure. She always thought that these fantasies were inspired by the puzzles Chi has found.
Chi realizes that by mixing and matching the different sets she can complete a single dragon puzzle that combines all of the others. Upon doing so she is whisked away to ancient Babylon where she must continue the duties of her father's legacy as a servant to the dragon and a savior of the world.