Alex rejects his new role as the Chosen One, but then a sleeper threat in Vega forces him to spring into action and protect the ones he loves. Meanwhile, Michael meets with Gabriel one last time before the war between angels and mankind reignites. Elsewhere, General Riesen and David Whele try to tie up loose ends.
Based on characters from the 2010 film Legion, Dominion is an epic supernatural drama set in the year 25 A.E. when an army of lower angels, assembled by the archangel Gabriel, has waged a war of possession against mankind.
The archangel Michael, turning against his own kind, has chosen to side with humanity against Gabriel. Rising out of the ashes of the 25-year long battle are newly fortified cities which protect human survivors.