The greatest superhero audiobook saga of all begins here, with Volume 1 of the Sentinels saga! The power-mad Warlord stands poised to conquer - or destroy - the universe itself. Can anyone stand in his way? Enter the Sentinels: College student, Lyn Li - brilliant inventor, and total jerk, Esro Brachis - beloved national hero, (and amnesiac!), Ultraa, flamboyant showman, Damon Sinclair, and mysterious alien cyborg, Vanadium. When at last they all clash atop the Warlord's floating city, can the world itself survive?