From Majesco: It's Christmas time in New York City and a strange virus has appeared turning seemingly normal citizens into the insane, violent Infected. Rookie Officer Stevens is one of the first victims but unlike others, is strangely immune. The mysterious Dr. Schaeffer discovers that Stevens' blood can be used to destroy the otherwise invincible Infected, and creates a special “viral gun” that fills shells with blood from Stevens' arm and blasts them straight into the Infected, causing them to violently explode.