Edge of Tomorrow

In 2015, aliens called "Mimics" arrive in Germany via an asteroid and swiftly conquer most of continental Europe. By 2020, the United Defense Force (UDF), a global military alliance established to combat the alien threat, finally achieves a victory over the Mimics at Verdun using newly developed mech-suits. In Britain, the UDF plans a major invasion of France, and General Brigham orders recently attached U.S. Army Major William Cage, a public affairs officer, to cover it. Cage, having no combat experience, objects and threatens to blame Brigham if the invasion fails. Brigham has Cage arrested and sent to Heathrow Airport, now a military base. Cage awakens to find Brigham has demoted him to a private and assigned him to Master Sergeant Farell and the misfit J-Squad, who do not take kindly to Cage.

The landing in France is a colossal failure; Farell and J-Squad are quickly killed. Cage uses a Claymore mine to kill an unusually large blue Mimic but is mortally wounded by the explosion and covered in the alien's blood. Cage jolts awake to find himself back at Heathrow, reliving the events of the previous morning. His attempts to warn Farell against the invasion are ignored, and he experiences the loop of dying on the beach and waking up at Heathrow repeatedly. During one loop, Cage tries to save Sergeant Rita Vrataski, a celebrated hero of the battle of Verdun. She realizes Cage can loop time and orders him to find her the next time he wakes up.

Cage reawakens and locates Vrataski, who takes him to Dr. Carter, an expert in Mimic biology. He explains that the Mimics are a superorganism in which the "Omega" controls the cerebrum, while the "Alphas" behave as the ganglia through which the Omega controls ordinary Mimics; if an Alpha is terminated, the Omega resets the day and adjusts its tactics until the battle is won. Cage inadvertently "hijacked" their ability to reset time through his exposure to an Alpha's blood. Vrataski had this ability at Verdun, using it to win the battle before she was wounded and received a blood transfusion, losing the power. She tells Cage to locate and kill the Omega to end the alien invasion.

Over many more loops, Vrataski trains Cage to excel in combat. After a frustrating lesson, Cage escapes to London, only to discover that the Mimics will attack there next after the invasion. After seeing visions of a dam in Germany where the Omega is hiding and spending many loops figuring out how to escape the invasion and reach the dam, Cage grows closer to Vrataski, but she is only interested in the mission. Cage flies to the dam alone upon reaching a point where Vrataski is killed no matter what they do. The Omega is not there and he is ambushed by an Alpha who attempts to strip him of his ability to reset time, but Cage deliberately drowns himself.

Cage and Vrataski infiltrate the Ministry of Defence, where Cage convinces Brigham to give him Carter's prototype device that can locate the Omega, but they are pursued by military police on leaving. During the ensuing car chase, Cage uses the device and discovers the Omega is under the Louvre Pyramid in Paris. Cage is seriously injured during capture and wakes up in a hospital to find he has been given a blood transfusion and has lost the ability to loop time.

Vrataski frees Cage and they recruit J-Squad to help destroy the Omega before the invasion begins. They fly to Paris, where the soldiers sacrifice themselves so that Cage and Vrataski can reach the Louvre. Before luring away an Alpha standing between them and the submerged Omega, Vrataski kisses Cage to thank him for getting her as far as he did. When the Alpha kills Vrataski and mortally wounds Cage, he manages to drop a belt of grenades that destroys the Omega, killing the Alpha and the Mimics.

As a dying Cage floats down into the Omega's blood, he loops again, and awakens two days earlier, en route to his original meeting with Brigham, before the UDF invasion of France. But this time he awakens in an alternative history. In this alternative timeline, he watches a news conference during which the General announces that a huge mysterious energy blast was detected in Paris. The General says that the Mimics have died and the human forces will commence sweeping through Europe the next day. When he arrives he sees that all of J-Squad are alive. He later finds Vrataski, who does not recognize him, and greets him as coldly as she did in previous loops, which Cage responds to by laughing.