In 2077, the human Jack Harper works with his companion Victoria "Vica" on the surveillance station Tech 49. Jack repairs drones and his memory was erased as part of the security process to stay on Earth, and he knows that Earth is completely depleted after sixty years of war against the alien invaders Scavengers "Scavs". The aliens have destroyed the moon and were defeated by nuclear weapons and the earthlings have moved to Saturn's moon Titan since the planet was completely destroyed. Now Jack has to protect the power stations that use the ocean to supply energy to Titan fixing the drones. He also has recollections of a mysterious woman at the Empire State Building when Earth was habitable. Jack and Vic receive instructions from Sally (Melissa Leo), who is located on the space station Tet, and Vic is anxious to leave Earth in two weeks to join the survivors on Titan.—Claudio Carvalho, Rio de Janeiro, Brazil