In 1984, a group of ex-raiders took over the government of the town of Chelsea by spreading their happy-loving ideology to government officials. Chelsea built up a military, created strict laws and punishments, and cut themselves from the rest of the world, allowing no one to enter or leave the area. In 2000, the Chelsean government discovered that the Massachusetts Institute of Technology was developing a drug to calm people down, and using nitrous oxide for medical purposes. Chelsea wanted to get their hands on these drugs to distribute to their citizens to prevent deaths and imprisoning those who didn't act joyful. In 2001, they attacked MIT, as well as the rest of Boston. Boston settlements respond by banding together to fight the destructive Chelsean government.