Justice league part 1 part 2 plots

Part One
Amanda Waller, director of the espionage agency A.R.G.U.S., and her bodyguard Katana arrive at a remote research facility during an evacuation, where physicist Dr. Ray Palmer is leading a research team experimenting on a motherbox. Victor Stone infiltrates the facility and confronts Will Magnus. Magnus warns Victor that since Superman's death, the world has been made vulnerable to a powerful alien threat, and that something big is coming to Earth. Victor senses the motherbox radiating an unusual form of energy, and it suddenly activates, opening a boom tube and allowing Parademons to come through. Victor vacates through into the planet of Apokolips, and his internal systems immediately shut down and he is apprehended. 
Bruce Wayne, Jason Todd, and Dick Grayson, with the help of Barbara Gordon, investigate a military operation led by the Department of Extranormal Operations under an abandoned Metropolis tunnel. They relay this information to the Justice League and discovers the tunnel is connected to Gotham. Batman lures the Justice League down there and discovers that the tunnel is infested with Parademons. The Justice League learn that they are after the mother boxes hidden on Earth. After learning that one of the mother boxes has been fused with Victor Stone, they attempt to find him. Wayne has a dream of a post-apocalyptic world, where he leads a group of rebels against a fascist Superman. He is snapped out of the dream by The Flash, who warns him of their future. Bruce departs from the Justice League to consult with Barry Allen on the meaning of the apocalyptic future he had. Barry explains that the time stream has been corrupted and that the speed force has been warning him about a being named Darkseid. Barry reveals that motherboxes are a technology from another dimension who Diana's people are offsprings of.
Bruce and Barry travel to Theymyscira and learn that thousands of years ago, the Old Gods led by Zeus, the Atlanteans led by King Atlan, and the Amazons led by Queen Hippolyta held off a resistance against Darkseid's forces as they attempted to subjugate Earth. The source of Darkseid's power were mother boxes, and they are were kept amongst the Atlanteans, Amazons, and mankind to protect. After realizing that one of the metahumans on Luthor's files was an Atlantean, they track Arthur Curry down to a lighthouse in Maine. Curry declines, revealing he gave up the throne to protect the surface world. However, his wife Mera and trusted adviser Vulko, persuade Curry to convince the Atlanteans help stop the invasion.
Meanwhile on Apokolips, Victor's body has been saved by Scott Free and others in hiding who plan to start a rebellion against the forces of Apokolips. To do this, they need the motherbox that's inside Victor, but is damaged. To do this Scott breaks scientist and leader of the rebellion Himon out of a prison cell. While fixing Victor's body, the rebels are raided by forces led by Kalibak and Himon sacrifices himself. When Victor is healed, Scott reveals that Darkseid plans to bring down Earth and eventually, the multiverse down with it. 
Darkseid and his agents broadcast a global address of the Anti-Life-Equation through all communication networks. Wally West emerges from the time stream one month into the future where most of Earth's entire population is put under Darkseid's control and some of the super-hero community has become a military force. In Metropolis, Nix Uotan, a former Monitor who guards the multiverse with no memory of his past life, is kept inside a holding cell where very few aren't affected by the equation. There he meets the forever people, where he is pressed against his past life. After remembering his wife's name, Nix powers and memories are reborn, and he is transported to The Multiversity, where a group of heroes across the multiverse unite to save it.
At Superman's grave in Smallville, the New God Orion transports the body of Superman to New Genesis, where he is resurrected by the Highfather and explains why the New Gods have interfered with humanity and resurrected Superman, and what Darkseid's ultimate goals are. Superman is warned he cannot defeat Darkseid along, and with the help of the Legion Of Super-Heroes brought by Highfather, Superman travels to Earth.