Aliens have invaded Earth, and most of the population has been killed off. A special ops unit, Task Force 141, consisting of Price, Ghost, König, Keegan, Soap, Nikto, Krueger, Gaz, Roach, and Horangi was wandering through the forest when a group of aliens surrounded them. The group was out of ammunition and all they had was knives and machetes. They raise their weapons, ready for a fight.