Overlord is a 2018 American alternate history action horror film directed by Julius Avery and written by Billy Ray and Mark L. Smith. It stars Jovan Adepo, Wyatt Russell, Mathilde Ollivier, John Magaro, Gianny Taufer, Pilou Asbæk, Bokeem Woodbine and Iain De Caestecker. The film was produced by J. J. Abrams, through his Bad Robot banner, and Lindsey Weber. The plot follows several American soldiers who are dropped behind enemy lines the day before D-Day and discover terrifying Nazi experiments.

On the eve of D-Day in an alternate 1940s where Executive Order 9981 is signed in 1944, a paratrooper squad, most of them in an integrated unit, is sent to destroy a German radio-jamming tower in an old church. Their plane is shot down and crashes, and most of the squad, including squad leader Sgt. Rensin, die either in the crash or by Nazi soldiers and landmines. Four survivors remain: second-in-command Corporal Ford, Pfc. Boyce, Pfc. Tibbet, and Pvt. Chase.

The team eventually meets Chloe, a young woman from the village where the church is located. She lets them take refuge in her house. Chloe lives with her 8-year-old brother Paul and her aunt, who was disfigured by Nazi experiments taking place in the church. After Tibbet and Chase depart to check the scheduled rendezvous site, a Nazi patrol led by SS Hauptsturmführer Wafner visits Chloe. Wafner sends his men away, and proceeds to coerce Chloe for sex, threatening to send her brother to the church to be “fixed.” Boyce interrupts the Nazi officer, and Ford is forced to follow suit, restraining Wafner.

Attempting to reach the rendezvous point to look for Tibbet and Chase, Boyce witnesses Nazis burning disfigured villagers. He is chased by a dog and forced to hide in a truck carrying dead bodies into the church. Sneaking out of the truck, Boyce discovers an underground base that houses a radio operating room and a laboratory where the Germans perform experiments on the villagers involving a serum and a pit of black tar. Boyce takes a syringe containing the serum and rescues Rosenfeld, another member of the paratrooper squad, who was captured alive. They escape through the base’s sewers.

Boyce and Rosenfeld get back to Chloe’s house, where Tibbet and Chase have already returned. Wafner refuses to explain what the serum does, even as Ford tortures him. As the squad prepares to attack the church, Wafner attempts to escape, and fatally shoots Chase. Boyce, having seen a dead man supposedly resurrected by the serum in the lab, injects Chase with the syringe. Chase is resurrected, but mutates and turns violent. A scuffle ensues, ending with Boyce bludgeoning Chase to death. A patrol responding to the carnage arrives, and a shootout erupts in which he dies and Ford blows half of Wafner’s face off. Wafner escapes with Paul as a hostage and injects himself with two doses of the serum in the lab.