"28 days later" is a British post-apocalyptic horror film directed by Danny Boyle and written by Alex Garland. It was released in 2002 and stars Cillian Murphy, Naomie Harris and and Christopher Eccleston. The action of the film takes place in a world where a highly contagious virus has turned most of the population into aggressive, zombie-like creatures. The story follows a group of survivors as they navigate the dangers of this new world and search for safety.
The film was highly acclaimed for its direction, script and performances, and has since become a cult classic in the horror genre. It also had a significant impact on the depiction of zombies in popular culture, influencing many subsequent films and television shows.