Earth is decimated after intergalactic tyrant Darkseid has devastated the Justice League in a poorly executed war by the DC Super Heroes. Now the remaining bastions of good – the Justice League, Teen Titans, Suicide Squad and assorted others – must regroup, strategize and take the war to Darkseid in order to save the planet and its surviving inhabitants.

Life for teenage versions of Wonder Woman, Supergirl and Batgirl is complicated as they try to balance their schoolwork with secret identities and fighting crime.

Recently discharged Marine sniper John Stewart is at a crossroads in his life, one which is only complicated by receiving an extraterrestrial ring which grants him the powers of the Green Lantern of Earth. Unfortunately, the ring doesn't come with instructions - but it does come with baggage, like a horde of interplanetary killers bent on eliminating every Green Lantern in the universe. Now, with the aid of the light-hearted Green Arrow, Adam Strange and Hawkgirl, this reluctant soldier must journey into the heart of a galactic Rann/Thanagar war and somehow succeed where all other Green Lanterns have failed.

When innocent civilians begin committing unthinkable crimes across Metropolis, Gotham City and beyond, Batman must call upon mystical counterparts to eradicate this demonic threat to the planet; enter Justice League Dark. This team of Dark Arts specialists must unravel the mystery of Earth's supernatural plague and contend with the rising, powerful villainous forces behind the siege—before it's too late for all of mankind.

John Constantine wakes up in the eerie House of Mystery with no recollection of how he got there. Fortunately, Zatanna and his friends are all there. Unfortunately, they have a bad habit of turning into demons and ripping him to shreds, over and over again!