Johnny, an articulate yet deeply troubled drifter, flees Manchester for London to escape a violent confrontation. Upon arrival, he seeks out his ex-girlfriend Louise, who shares a flat with Sophie. Louise is unfazed by Johnny's sudden reappearance and reluctantly lets him stay. Chaos and tension quickly escalate in the flat as Johnny engages in cruel, philosophical diatribes, probing the vulnerabilities of those around him. His interactions with Sophie become particularly fraught, revealing the complexity of his character—a mix of abrasive intellect and raw vulnerability.

As Johnny wanders through the streets of London at night, he encounters a variety of characters, each encounter exposing different facets of his personality. He meets Brian, a security guard, with whom he debates existential topics, and Archie, a night clerk, who tolerates his ramblings. These interactions paint a picture of Johnny's inner turmoil, juxtaposing his outward confidence with a profound sense of aimlessness and despair. Meanwhile, Louise and Sophie navigate their own tumultuous relationship, further strained by Johnny's presence, leading to an unsettling exploration of human connection and disconnection.