28 Days Later...

Late one night, a group of British animal rights activists breaks into a laboratory to free infected chimpanzees used for medical research. Ignoring warnings from the lab staff, they release the Rage virus subjects, leading to a catastrophic event that transforms both the activists and the scientist into raging infected individuals.

Twenty-eight days later, Jim, a bicycle courier, awakens from a coma in a deserted hospital without any knowledge of the chaos that has unfolded. As he leaves the hospital, he realizes that he is alone in the city, facing a terrifying new reality with no signs of life around him.

While wandering the desolate streets calling out for help, Jim encounters a church filled with crazed infected individuals. As they attack him, he narrowly escapes, only to be rescued by two survivors, Selena and Mark, who understand the dire situation he's found himself in.

Selena and Mark rush Jim to their hideout in the London Underground. They use explosive charges linked to gasoline pumps to cover their escape from the infected, emphasizing the urgency of their survival in a world overrun by uncontrollable monsters.

Determined to find his family, Jim insists on visiting his parents' house. Unfortunately, they discover that his parents committed suicide to avoid becoming infected, a grim realization that deepens Jim's sense of loss and isolation in this new world.

That night, the group is attacked by a throng of infected, leading to a critical moment where Mark suffers a deep cut. Selena, understanding the danger of infection, acts decisively and kills him to prevent the virus from spreading, highlighting the harsh realities of their survival.

As Jim, Selena, and Hannah travel through the abandoned city, they quickly learn that health and survival are all that matter. Selena's focus on survival complicates their emotional connection, while Jim struggles with his desire for companionship in a world gone mad.

They encounter Frank and his daughter Hannah, who have also survived the infection, leading to a temporary sanctuary. Despite the bond that forms among the survivors, Jim and Selena argue about the risks of letting others into their inner circle.

Frank expresses concern over dwindling supplies, particularly water, and shares a recorded radio message from soldiers claiming to have a solution to the infection. This sparks a glimmer of hope among the group, motivating them to seek help and escape the city.

During their escape attempt, the cab they travel in becomes trapped in a tunnel filled with wrecked cars. As a horde of infected approaches, the group races against time to change a flat tire, showcasing their desperation and the constant threat of the infected.

Arriving at the blockade, disaster strikes when Frank is infected by contact with the blood of a corpse. The mood shifts drastically as Frank fights to protect Hannah before succumbing to the infection, forcing the remaining survivors to confront their own mortality.

After Frank's tragic fate, Jim, Selena, and Hannah are taken captive by soldiers at a fortified mansion. Major Henry West reveals a disturbing plan for the infected and their method for dealing with the outbreak, forcing Jim to contemplate his next move.

In a moment of desperation, Jim escapes from the soldiers and mounts a plan to free Selena and Hannah. He unleashes an infected soldier on the guards, creating chaos that allows them to evade capture and reunite once again as a group.

Badly injured during their escape, Jim is rushed to a deserted hospital where Selena performs emergency life-saving procedures. Their bond deepens through the ordeal, igniting a romantic connection amid the bleak circumstances they face.

After another thirty days, a recovering Jim awakens to find a tranquil scene outside a cottage with Selena and Hannah. The survivors unveil a banner reading 'HELLO' for a passing jet, symbolizing their hope and newfound determination for survival in a changed world.