Gary King, a middle-aged alcoholic haunted by his rebellious youth, refuses to let go of the past. Twenty years after failing to complete an epic pub crawl in their hometown of Newton Haven, Gary tracks down his estranged childhood friends—Andy, Steven, Oliver, and Peter—and manipulates them into returning. Still grieving the glory days when they were inseparable, Gary is driven by a desperate, self-destructive nostalgia to finally finish the legendary "Golden Mile," a twelve-bar pub marathon ending at a tavern aptly named The World's End.Initially, the reunion is tense and uncomfortable. The friends, now successful adults with mortgage payments, career stress, and lingering resentment over Gary’s past toxicity, want nothing to do with him. Andy, once Gary's closest confidant and now a staunch teetotaler harboring a deep-seated grudge following a tragic car accident, only joins to keep Gary out of trouble. However, as the group travels deeper into their old stomping grounds, the atmosphere grows unsettling. The townspeople are strangely uniform, eerily polite, and entirely devoid of individuality.During a bathroom brawl in the seventh pub, the truth is violently revealed: the town has been secretly overtaken by a subterranean hive-mind of synthetic alien entities known as the Network. These machines have replaced the local population with robotic doppelgängers, referred to as "Blanks," in a misguided bid to integrate humanity into a peaceful, standardized galactic empire.Faced with this
existential threat, the fractured friends must stick together to survive. As they stagger from pub to pub, heavily intoxicated yet adrenaline-fueled, their personal grievances bubble to the surface. Old rivalries are confronted, secrets are spilled, and their long-buried emotional baggage is dragged into the open. Despite the escalating chaos and the relentless pursuit of the robotic townsfolk, Gary stubbornly insists on pushing forward with the pub crawl, treating the alien invasion as a mere inconvenience standing between him and his drinking goal.The climax arrives at The World's End, where the Network manifests as a glowing, disembodied voice to debate humanity's worth. While the rest of his friends are exhausted and ready to surrender, Gary refuses to yield to the alien authority, arguing passionately for humanity’s right to be flawed, chaotic, and free. Frustrated by humanity's stubborn refusal to comply, the Network abandons Earth. Without their
advanced technology, the alien machinery collapses, triggering a massive cataclysm that instantly destroys Newton Haven and plunges the planet back into a primitive, apocalyptic dark age. In the aftermath, a scarred and weary Gary, finally sober and accepting of his true self, wanders a ruined world alongside his faithful robotic companions, having achieved his legendary finish line at the ultimate cost.