With their mother still missing after going through a Civil War time portal in their spooky house, and their father in jail under a false accusation, Xander, David, and their younger sister continue to try to bring their mother back, now with the help of an old relative who has turned up unexpectedly.

David, Xander, Dad, and Keal discover that Taksidian wants their house for himself in order to use the time portals to build an empire, and unless they can find his weakness in time, the future of the world itself may be in danger.