Oblivion

By March 14, 2077, Jack Harper and Victoria "Vika" Olsen are among the few humans left on Earth. Sixty years earlier, a race of alien scavengers destroyed the Moon and invaded Earth; humanity won the war, but nuclear weapons and the loss of the Moon left most of the planet uninhabitable. With Vika as his communications officer, Jack serves as "Tech 49", repairing the combat drones that hunt the remaining scavengers and guard the "hydrorig" generators converting seawater into fusion energy. Led by mission director Sally from aboard the "Tet" space station orbiting Earth, they will soon leave for humanity's new home on Titan. Although their memories have been wiped, Jack has recurring dreams of a life before the war with an unknown woman.