Overview
Reign of the Supermen is a 2019 American animated science fiction superhero film produced by Warner Bros. Animation and DC Entertainment. The film is a direct sequel to the 2018 animated film The Death of Superman, based on the comic book story arc of the same name in "The Death of Superman" event. It is the twelfth film of the DC Animated Movie Universe and the 35th film of the DC Universe Animated Original Movies. The film was released in limited Fathom Events theaters on January 13, 2019, and to digital and Blu-ray two days later.
Plot
Six months following Superman's sacrifice and death at the hands of Doomsday, the crime rate in Metropolis has spread, while four new controversial Supermen have emerged. Lois Lane and Clark Kent's adoptive parents are still in mourning over his death. Lois has been investigating the new Supermen by gathering information from different sources.
Lex Luthor introduces a new Superman to the world at a press conference, who Lois discovers is actually a clone – Superboy created by Dr. Dabney Donovan. The conference is interrupted by the Eradicator, Steel and Cyborg Superman (who claims he is the true Superman) who fight each other until both the Eradicator and Cyborg Superman leave the battle. Unknown to anyone, Superman has just barely survived his battle with Doomsday and is recuperating at the Fortress of Solitude as the Eradicator rejuvenates his DNA. That night, Cyborg Superman visits Lois in an attempt to convince her that he is not a fake. Lex becomes frustrated with Superboy for his childish actions.
The Justice League, accompanied by Superboy, are hired as bodyguards for the President, who is unveiling their new Watchtower. The presentation is suddenly attacked by Parademons, summoned via a boom tube portal. The League are mysteriously transported to another planet and declared dead while Cyborg Superman rescues the president and is announced to the world as the true Superman. Angered, Lex reveals to Superboy he shares his DNA and kills Dr. Donovan after he explains to Lex that Superboy is the best clone they could create. With the help of Steel, Lois discovers Cyborg Superman is the deceased astronaut Hank Henshaw who blames Superman for not saving him and his wife and has decided to destroy his legacy by impersonating him. Henshaw reveals to the world his new "Cyber Corps" militia, which are created by Mother Boxes infused with humans.
From Wikipedia (CC BY-SA 4.0).