Revealed in The Flash 2's post credit scene, Lex Luthor has assembled a team to defeat the justice league once and for all. Led by Luthor’s brilliance and fueled by the combined power of Joker, Gorilla Grodd, Black Manta, Sinestro, Cheetah, Captain Cold, and eventually, Bizarro. The Legion strikes with precision, exploiting the Justice League’s every weakness. With Superman, Batman, Wonder Woman, Aquaman, Green Lantern, and the Flash forced to confront threats created to break them apart, the League must outsmart their foes and forge an unshakable unity. As the battle goes from the streets of Metropolis to the edges of space, Earth’s greatest heroes face their ultimate test.