Batman: The Long Halloween (2019)

Batman: the Long Halloween is the second of 4 films, leading up to the events of Man Of Steel 2.

the Premise is Based on the Long Halloween Storyline.

Plot:
At a wedding in June, Gotham City mob boss Oswald "The Penguin" Cobblepot tries to pressure Bruce Wayne to help with importing illegal weapons, and Bruce refuses. Bruce begins to leave the party with Selina Kyle, but they find Gotham District Attorney Harvey Dent, who has been beaten by some of the Penguin mob. After helping him, Bruce decides to leave alone.

As Batman, Bruce enters Oswald's penthouse to investigate. He encounters Catwoman, who flees from him. Batman ends the pursuit to answer a Bat-signal. Dent and police Captain Jim Gordon have called him, and the three enter a pact to end Cobblepot's reign by bending the rules if necessary, but never breaking them.

On Halloween, Johnny Vitti is shot twice in the head by an unknown assailant while taking a bath. The perpetrator leaves behind the murder weapon, a .22 caliber pistol with the nipple of a baby bottle used as a crude silencer, as well as a jack-o-lantern. That night Dent, Gordon and Batman discuss the murder, and Dent says he does not care about the death of a mafia hitman.

Batman notices that Catwoman is eavesdropping, and she offers to help Batman hit the Penguin where it hurts the most: his money. Catwoman's information leads Batman and Dent to a warehouse where the Penguin has stockpiled over $20 million in paper cash. They together set fire to the warehouse and destroy the money.

Dent returns home and a bomb detonates, and the D.A. and his wife Gilda survive. For months afterward, on certain holidays, the "Holiday killer" continues murdering members of the Cobblepot crime family, including all of the Sullivan family and Rupert Thorne. Meanwhile, Dent's new assistant, Vernon Fields, searches old police files and discovers a connection between Oswald Cobblepot and Bruce Wayne.

Batman tracks the Riddler, whom Holiday let live on April Fool’s Day. The Riddler explains that Cobblepot hired him to find out who Holiday was but kicked him out when the solutions he gave were less than satisfactory. Batman suspects that the Riddler was left alive to spread that the Penguin was looking for Holiday.

On August, Cobblepot's birthday, Roman Sionis is going to trial to testify against him. Before going to the stand, Fields hands him a bottle of acid that appears to be heartburn medicine. During questioning, Sionis hurls the acid at Dent, hideously disfiguring half of his face. Dent is rushed to the hospital, where he stabs a doctor and escapes. On Labor Day, Dent has been hiding in Gotham’s sewers for a month. He crosses paths with Killer croc, who attacks him. Dent is able to calm him. Gordon, meanwhile, has come to the conclusion that Dent is Holiday. Batman refuses to acknowledge it, but Gordon demands to hear the truth from Dent himself.

Batman questions Cobblepot about Dent's location. The Penguin accuses Batman of knowing that Dent was Holiday but standing aside. Batman then seeks out Catwoman, demanding to know why she is so interested in Cobblepot. She refuses to answer, and runs away.

On Halloween, all of the Arkham inmates are released by Dent, with help from killer croc, based on the flip of a coin. Cobblepot and his accomplice Candy are ambushed in their penthouse by the escapees (including killer croc), Dent (who has now become Two-Face) and Catwoman. Batman intervenes, but is unable to stop Two-Face from murdering Penguin. During the following scuffle, Candy falls out a window. Two-Face escapes and kills his former assistant Fields for helping Sionis scar him. Later, Two-Face turns himself in to Gordon and Batman. As he is cuffed, he tells them there were "two" Holiday killers.

Peace is restored in Gotham, after a man named Julian Day, calling himself the calendar man, confesses to the crime, and is sent to Arkham.