The adventure of a lifetime continues with the third installment in the award-winning Kingdom series.

For three weeks, the doorway between the worlds has been closed. In Vermont, Roy and his crew search for the third door, while in the other world, Alexander and Gorrro continue their search for Savannah, who was captured. In a moment, both worlds again collide as an old nemesis arises and a secret past threatens to change the course of the war once and for all.