When Steppenwolf comes to Earth looking for the mother boxes after one of them sent a pulse through space at the end of the first Cyborg movie, Cyborg has to stop him. The movie ends with Cyborg and Beast Boy getting beat by Steppenwolf and him taking the mother box back to Apocalypse. In the credits we see Darkseid having a conversation with a demon named Trigon about sending Trigon's daughter to infiltrate the heroes and destroy them from the inside.
