Taking place between January 1976 and January 1979 in Los Angeles, I Am Legend opens with the monotony and horror of daily life for the protagonist, Robert Neville. Neville is apparently the only survivor of an apocalypse caused by a pandemic of bacteria, the symptoms of which are similar to vampirism. Initially, we find Neville preparing for a night under siege from a horde of vampires. He spends each day repairing his house, boarding up windows, hanging garlic, disposing of vampire corpses, and gathering supplies.
Much of the story is devoted to Neville's attempt to understand, and possibly cure the disease that wiped out humanity. The novel details Neville's research into the nature of vampirism, and the possible causes thereof. Through flashbacks, some of Neville's past is revealed. Struggling to cope with the loss of his family, Neville goes about his daily routine.
(from
Wikipedia.com)