A blast from the past reveals the real reason behind Sky and his family's extended absence, turning back the twin hands of time to tell a tale built on old bonds, and enduring enmities. With the exposure of the extraterrestrial emergency that turned friends into foes and shaped destiny of planet Earth itself, can the questions of yesterday be answered today? Will the unfinished business of past decades mar the future of a world facing alien annihilation? It's time Rain, Sean, Stone, Sky, Cain, and The Terran Defenders, to unite! What chance have they in the face of the ADVENT CRISIS?