Set in the grim, neon-lit underworld of post-industrial Glasgow, *Half Man* follows Arthur Sterling, a disgraced former detective haunted by a brutal past and a failing body. Ten years after losing his leg and his badge in a botched cartel raid, Arthur scrapes by as a low-level enforcer for the city’s most volatile crime syndicate, run by the ruthless and unpredictable Jimmy "The Butcher" Cavanaugh. Arthur’s life of numbing whiskey and chronic physical pain is suddenly upended when he receives a cryptic distress call from his
estranged daughter, Chloe, a brilliant genetic researcher who has mysteriously vanished from her high-security laboratory. Driven by desperate paternal guilt and a fierce need for redemption, Arthur embarks on a relentless crusade to find her, knowing this may be his final chance to heal a
fractured family.As Arthur digs deeper, he uncovers a horrific conspiracy spearheaded by Genesis BioTech, a shadowy pharmaceutical conglomerate secretly bankrolled by Jimmy. Chloe had discovered that the corporation’s flagship longevity drug is actually a mutagenic catalyst, causing grotesque, predatory mutations in human subjects. Jimmy plans to weaponize this serum to seize absolute control over the city’s criminal empire. Aided by Maeve, a sharp-tongued, cybernetically-enhanced street doctor with her own vendetta against Genesis, Arthur cuts a bloody swath through the city's elite. Along the way, he confronts old demons, including corrupt former colleagues who helped frame him a decade ago.The tension escalates when Arthur finally locates Chloe, who is being held captive in an underground Genesis facility beneath the River Clyde. She reveals that she engineered a localized antidote, but it requires a DNA signature from someone already exposed to the pathogen—meaning Arthur himself. The climax erupts in a brutal, multi-tier showdown as Jimmy’s enforcers attack the facility to secure the research. In a harrowing final battle, Arthur faces off against Jimmy, utilizing his tactical street smarts and the raw, surging adrenaline of his own mutating body to overcome impossible odds.Although Arthur successfully injects Chloe with the prototype and saves the city from a catastrophic outbreak, the victory comes at a devastating personal cost. The serum accelerates his own condition, forcing him into hiding. As Chloe escapes to expose Genesis to the world, Arthur vanishes into the misty Glasgow dawn, forever caught between humanity and monstrosity, a legendary ghost walking the line between justice and damnation.