Post-apocalypse, bloodthirsty aliens and despair are all that remain from the old world. The main character accompanies the transport to the nearest settlement of survivors. Along the way, he searches abandoned places, upgrades weapons, and also defends himself from the attacks of various mutants and savages. Weapons that can be modified and improved will help in the fight against them. The hero is also able to install turrets to hold back the onslaught of waves of enemies.