In a top secret British lab, peace activists release a monkey infected with a highly powerful and contagious test virus, despite the begging of the scientist in charge of operations. 28 days later, the infection has gone from one monkey to the majority of the UK, the host of the virus is lost in a murderous state, losing all logic and instinct. Jim, a courier, wakes up from his coma in an empty hospital, to find that the streets have been heavily littered and are empty. His fear began when he saw no one. His terror erupted when he realized he wasn't alone.