Childhood best friends Xander and Milo thought their adventurous days as Indigo Travelers had ended in Cura two years ago, when they restored Milo's human body and defeated the power-mad King Titus. But when old allies arrive unexpectedly, the boys must return to the magical world they once saved. They take with them friend, Sarah. The Indigo Travelers quickly uncover that an intruder to Cura passed judgment on the reformed king for his crimes. With his soul trapped in the Shadowlands, forever reliving the misery he inflicted on others, the kids must journey through the nightmarish landscape...