The epic and powerful conclusion to the Descendants of Light Series! A dark war is coming, and Sam, Emma, Gus, and Lillia may be the last hope for the Descendants. With Earth in the grips of the Darkness, Lior's worst fears are coming true. Dark souls in hiding have gathered from the corners of both worlds to follow the Dark One into battle, and they will stop at nothing to destroy the Descendants. Unprepared and outnumbered, the Descendants have little possibility for survival. But with the help of a secret organization and a dragon army, Sam, Emma, Gus, Lillia, and some new friends from Mentorship are sent on a desperate quest to save Lior. If they succeed, the Descendants may stand a chance against the Dark One. If they fail, the Light will fade forever. It's a gamble-one that could mean the end of Lior and Earth, but it is a chance they must take.