The game takes place in 2027, after a decade of Middle Eastern conflicts and an oil crisis
The Federation of the Americas, a South American force, invades the United States
The U.S. is no longer a superpower, and its military is struggling to survive
The Ghosts, a secret Special Forces unit, are called into action to protect the country
The Ghosts are led by retired Captain Elias Walker, and include his sons Logan and David "Hesh" Walker
The main antagonist is Gabriel T. Rorke, a former leader of the Ghosts who is now working for the Federation
