A retired special forces officer is trapped in a never ending time loop on the day of his death.

Based on the classic sci-fi novel by H.G. Wells, scientist and inventor, Alexander Hartdegen, is determined to prove that time travel is possible. His determination is turned to desperation by a personal tragedy that now drives him to want to change the past. Testing his theories with a time machine of his own invention, Hartdegen is hurtled 800,000 years into the future, where he discovers that mankind has divided into the hunter - and the hunted.

An alien race has hit the Earth in an unrelenting assault, unbeatable by any military unit in the world. Major William Cage (Cruise) is an officer who has never seen a day of combat when he is unceremoniously dropped into what amounts to a suicide mission. Killed within minutes, Cage now finds himself inexplicably thrown into a time loop-forcing him to live out the same brutal combat over and over, fighting and dying again...and again. But with each battle, Cage becomes able to engage the...