In the early 1970s, an American astronomer locates a cluster of meteors that would cross Earth’s path in the summer of 1998. Keeping this secret is the government's top priority as they do not want to panic the populace and they see it as a way to get the upper-hand against the Soviets.
March- Diplomatic solutions to the world's problems fail and war erupts as some mad men press ahead with their insane dreams. Most of the major cities of the Earth are hit by the powerful atomic warheads. High concentrations of radiation produce random storms and mutations. Somehow, life continues in the wasteland.
March- Shortly after the war, a group of US Army Engineers take over the Arizona State Death Row. The inmates are expelled into the surrounding deserts. The facility is rechristened as the Ranger Center.
Soldiers stationed at a satellite relay facility, which survived the war unscathed, join up with local farmers to form the Agricultural Center, a prosperous community centered around self-sufficiency and trading.
Team Echo is dispatched after Ace is killed by one Tinker's synths. Their investigations lead them to uncover radio signals from California and Tinker's involvement. They are deployed to Los Angeles to investigate after Team Foxtrot is wiped out and Angela Deth goes missing.
Team Echo reconnects with the Rangers in Arizona after losing contact due to the crash and lack of airborne transport to maintain a radio link. Matthias and his synths attack the Ranger Citadel.
Team Echo returns to the Citadel using a captured Sikorsky SH-3 Sea King. The Cochise AI and Matthias are confronted beneath the Citadel and destroyed, at the expense of turning the base into a radioactive crater.
Rangers rally and re-establish their operations at the radio tower, the New Ranger Citadel.