Gamers will have to eradicate an infection that is afflicting San Francisco’s residents then cure it before it spreads. Two weeks later, word of the infectious plague has reached St. Louis, ”and fear and paranoia are rampant among the residents. Town doctor Doc Yewll sends a distress call to a former colleague in the Bay Area who might be able to provide a cure, having spent weeks working on an anti-virus following the outbreak affecting residents in San Francisco.”
The Plague Sieges update adds an all new game mode, 8 new emergencies, 2 new pursuits, a new data recorder, and an all new mission series that runs from the 10th June through to the 17th.