Batman: Gotham Knights (DC Cinematic Universe Film)

Batman: Gotham Knights is a superhero action film based on the DC Comics character Batman. It is the first Batman movie in the DC Cinematic Universe, starring Ben Affleck as the title character. It also features Robin and Nightwing as part of Batman's team.

Cast
Ben Affleck as Bruce Wayne/Batman

Matthew Knight as Tim Drake/Robin

Alex Rusell as Dick Grayson/Nightwing

James Caan as Roman Sionis/Black Mask

Jeremy Irons as Alfred Pennyworth

Charlie Hunnam as Cameron Walker

Aaron Eckhart as Garfield Lynns/Firefly

Danny Glover as Lucius Fox

Gary Cole as Commissioner Gordon

Bryan Cranston as Professor Hugo Strange (cameo)

Plot Synopsis
After the formation of the Justice League, Batman returns to Gotham City to return to local crimefighting. Dick Grayson, the first Robin, has returned using the codename Nightwing. A teenager and good friend of Dick Grayson and Bruce Wayne named Tim Drake inherits the role of Robin. They, using the help of Commissioner James Gordon and Lucius Fox form a team to fight the crime of Gotham City.

Meanwhile, Roman Sionis, a.k.a. Black Mask, has taken over the organized crime in Gotham City. Sionis plans to end the Batman once and for all by hiring mercenaries to kill him. At Wayne Enterprises, Lucius Fox has been working on a mechanical flight technology to be used for Batman and his team. Sionis, though not knowing it had to do with Batman, sabotages the project by sending in a criminal by the name of Cameron Walker to be used as a test subject for Fox's experiments. In the middle of a presentation in front of Wayne Tech executives, Walker sabotages the presentation by stealing the experimental wings and using them to attack the building. The building is evacuated, and firefighters come in. One firefighter in particular, Garfield Lynns, experiences severe burns on his body.

Black Mask discovers that Fox was using the wings for Batman, and that the Batman, is in fact Bruce Wayne. Sionis finds Lynns and convinces him that his injury was Batman's fault, and that he must kill him. Lynns agrees and Sionis's men steal another pair of the experimental wings and combines it with a jetpack on a metal suit. Lynns wields the suit and a flamethrower and becomes known as "Firefly".

During the final battle Batman faces off against Firefly, while Robin and Nightwing take on Walker. In the end Lynns and Walker are captured by the GCPD. Batman himself takes on Black Mask in hand to hand combat. At the end of the fight a chemical is thrown at Sionis's face, melting the mask and molding it onto his face. Batman catches him and brings him to the GCPD.

At the very end of the movie, Walker is brought to Blackgate Penitentiary, while Sionis and Lynns are brought to Arkham Asylum, where they are personally greeted by Professor Hugo Strange, the warden.