Homefront

In 2013, one year after the death of Kim Jong-Il, North Korean leader Kim Jong-un reunites North and South Korea to form the Greater Korean Republic. The influence of China and the United States decline in the face of continued economic stagnation and a war between Iran and Saudi Arabia disrupts Middle Eastern oil supplies, while oil and gas to Western Europe is cut off by a Russian-Ukrainian "mutual interest" deal. As the United States withdraws overseas troops to deal with domestic instability, including the Texas secession debate and an outbreak of bird flu known as the Knoxville Cough, the Greater Korean Republic annexes Japan and several Southeast Asian countries. By 2022, the United States faces extreme economic turmoil and massive social unrest, causing a complete economic collapse and downfall. On January 16, 2025, a satellite, launched under the cover of a program to replace the decaying Global Positioning System, detonates a high-altitude nuclear weapon over the continental United States, resulting in a massive electromagnetic pulse throughout the continent. The destruction of above-ground electronics across the country is followed by the Greater Korean Republic seizing Hawaii, an invasion of San Francisco, paratrooper deployments across the Midwest, and the irradiation of the Mississippi River to divide the United States in half, leaving the American military isolated and scattered and U.S. residents must resist the invasion on their own.

Two years later after the occupation begins, Protagonist Robert Jacobs, a former Marine Corps combat helicopter pilot, is awakened in his makeshift house in Montrose, Colorado and ordered to a re-education camp in Alaska for failing to answer occupational military draft-notices. Jacobs sees that the Korean troops have seized control of Montrose, Colorado, taking potentially valuable residents into custody and executing resistors. However, the bus carrying Jacobs to a detention facility in Montrose is ambushed by American resistance fighters Connor Morgan and Rianna, who lead him to Oasis, a resistance hideout founded by local state patrolman Boone Karlson. Boone, Connor, and Rianna are aware of Jacobs's background as a pilot and recruit him to help recover fuel for the scattered U.S. military mounting up in San Francisco. Boone initiates the operation with himself, Jacobs, Connor, a former United States Marine corps soldier from North Carolina, Rianna, an hunting expert, and Hopper, a Korean-American technical expert from Oakland.

They plan to steal several tracking beacons in a school used as a labor exchange facility by contacting an "inside man" named Arnie. However, Arnie betrays the team in order to protect his children, forcing the team to kill the contact and eliminate all forces in the camp. They discover a mass grave and narrowly escape Korean reinforcements by hiding among the bodies. Shortly after Jacobs, Connor, and Rianna succeed in locating the trucks and planting a beacon on one of them, Connor and the team return to Oasis, only to find that Boone and all of the base's inhabitants have been killed by Korean troops. They soon understand that American residents are now being slaughtered as an example to others of the consequences to harboring resistance fighters. They narrowly escape with other Colorado resistance fighters by breaching the walls enclosing the town, destroying their semi-autonomous attack vehicle Goliath in the process.

Jacobs, Connor, Rianna, and Hopper are able to escape from Korean forces within Montrose with the information that a useable helicopter is located in a survivalist encampment in Utah, but, unfortunately, the camp inhabitants prove to be especially paranoid. The team infiltrates the camp and manages to steal the helicopter, pursuing the fuel convoy nearing Carson City, Nevada. With the convoy successfully hijacked and Jacobs providing air support, the team continues their trek to San Francisco, where they deliver their jet fuel to aid the U.S. military in their attempt to liberate the besieged city and the country

The guerrillas and the scattered American military forces begins to close in on San Francisco, they succeed in taking most of the city via the Golden Gate Bridge, by taking out their anti-aircraft guns and scrambling all fighter aircrafts, despite heavy Korean resistance and taking massive casualties. Nearing the other side of the bridge, the team finds itself outnumbered when a large Korean convoy tries to push the combined resistance forces back across the bay. Outnumbered and with little other choice, Connor advances towards the convoy with a flare and orders an air strike, sacrificing himself in the process to allow the remaining forces to proceed in taking the bridge back as the city now falls into American hands. The news of the operation is then reported by the British media, with reports that American resistances fighters are joining US military forces throughout the United States. The San Francisco offensive attack proves to be the turning point for America's guerrilla warfare against the Korean occupation, with the European Union calling an emergency meeting to consider giving aid to the United States.