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.

When Xander travels through the portals in the King's strange house to visit Uncle Jesse as a boy, he learns that David has died and determines to do whatever it takes, and visit as many worlds as necessary, to change the future.

To save the world from destruction, rescue their kidnapped mother, and battle the evil Taksidian, the King siblings try to control the mysterious portals in their house that send them to different time periods.