After the victory over the sorcerer Calvas, Tarean lives among the bird people in Airianis, uncertain about what his future path should look like. Then, he receives a mysterious call for help. Kesrondaia, the mother of the crystal dragons, asks him from her underground prison to rescue her children, who are being held captive by Calvas and his master, the Lord of the Depths. Once again, Tarean and his companions set out to face an almost impossible challenge. Their journey takes them to the very edges of Endars and beyond - into the legendary Dark Realms...