Damian and Raven reconcile their feelings for one another, while the heroes prepare their final assault. The group teleports to Stryker's Island in Metropolis, where Clark's wife Lois Lane has recruited the Suicide Squad for their operation, including Harley Quinn, Captain Boomerang, King Shark, Bane, Black Manta, and Cheetah. He also hopes that he'll be able to save his father, Batman, from Darkseid's control, or kill him if he is beyond saving. Though he wrongfully blames Clark for everything that happened, Damian agrees to join them on their quest to stop Darkseid. Save for Raven, Nightwing, and Superboy, all his teammates were killed or captured. Once a member of the Teen Titans as Robin, Damian left following Darkseid's invasion to lead his late grandfather's organization.
The group is attacked by the Assasins, but their leader Damian Wayne calls them off. Raven teleports the group to the League of Assassins outpost in Nanda Parbat, the act severely weakening her, due to her father Trigon's attempts to escape his magical prison after Raven captured him.
Still feeling guilty over the death of Zatanna, Constantine agrees to join the two on their mission, with Etrigan tagging along as well. Clark tells Constantine that Darkseid is using three devices called The Planet Reapers to drain the Earth of its molten core, which will destabilize and destroy the planet if successful. Finally, Superman was infused with liquid Kryptonite to deprive him of his abilities, and forced to wander his home with the knowledge of what his failed plan had brought. Clark reveals that some of the heroes were spared and used for other purposes: Batman was brainwashed and made to serve as Darkseid's right-hand man, Lex Luthor became the New God's representative on Earth, Wonder Woman, Mera, Martian Manhunter, Hawkman, and Starfire were fused with Apokolips technology and became Darkseid's enforcers, called the Furies. In a London pub, Constantine and the demon Etrigan are attempting to drown their sorrows when they are approached by Raven and a depowered Superman. The world's population is considerably diminished and much of the Earth is a wasteland. Two years later, Darkseid's forces have taken over Earth.
John Constantine flees from the battle, leaving his lover, Zatanna, to die. Upon their arrival at Apokolips, the League is decimated by Darkseid's Paradooms: genetic hybrids of Parademons and Doomsday. Unbeknownst to the heroes, Darkseid is spying on them through Cyborg's Apokolyptian technology and is aware of their plan. Following his two failed invasions of Earth during Justice League: War and Reign of the Supermen, the Justice League prepare to launch a counter-attack on Apokolips, while Teen Titans remain on Earth to defend it. The New God Darkseid has been on the warpath, destroying worlds throughout the universe and making his way towards Earth, building a tyrannical empire from his fiery home of Apokolips.
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 to save the planet and its surviving inhabitants in this epic finale that will forever end the DC Animated Movie Universe Plot " Accept the things you cannot change, have the courage to change the things you can, and have the wisdom to know the difference" -Nora Allen, Justice League: The Flashpoint Paradox
Culminating a six-year journey that began with Justice League: War in 2014, Justice League Dark: Apokolips War finds Earth decimated after intergalactic tyrant Darkseid has devastated the DC Super Heroes.