Set years before the events of the previous "Gear of War" trilogy, the story centers on Kilo Squad, a troop of soldiers led by Damon Baird as they attempt to save the besieged city of Halvo Bay from a terrifying new enemy.
On the planet Sera, a former P.O.W. is civilization's best hope in their fight against the Locust Horde, a race of creatures who emerged from underneath the planet's surface, intent on eliminating humankind.