28 Weeks Later is a 2007 British post-apocalyptic science fiction horror film, and sequel to the 2002 film 28 Days Later. The film was directed by Juan Carlos Fresnadillo, and was released in the United Kingdom and in the United States on 11 May 2007.
Don and his wife Alice are living alongside a group of survivors in a heavily reinforced cottage somewhere in Rage infected Britain. They are eating a meal when a young boy is heard outside shouting and banging on the house. Against his better judgement, Don opens the door to let in the frightened child, who had escaped a horde of infected. The infected soon discover the hideout and break their way in, overwhelming the group quickly. Don is separated from his wife (who was trying to rescue the child) and flees down a river in a small motor boat, the only survivor of the group.
Over the course of 28 weeks, Britain is declared relatively safe again and an American NATO force begins repopulating the country, amongst them being Doyle, a wisecracking sniper; Flynn, a helicopter pilot and family man; and Scarlett, an army medical officer who is weary of two children, Tammy and her younger brother, Andy, who have just arrived by plane with other British expatriates. Scarlett is frustrated to learn that her superiors did not inform her that minors will be living in the militarized zone of London, and when she does a checkup on Andy she notices that he has heterochromia, a trait he inherited from his mother.