After his husband Carlos, a prominent Bogotá prosecutor, receives vicious homophobic death threats targeting their home, photographer Javier descends into severe insomnia and terrifying, reality-bending nightmares. Driven by an obsessive need to protect Carlos and their two children, Javier armors himself with an illegal revolver and round-the-clock vigilance, slowly alienating the very family he is desperate to shield. But as the line between waking paranoia and supernatural dread dissolves, Javier is caught between a clinical diagnosis of schizophrenia and a chilling metaphysical revelation: that the force hunting him is not merely an unhinged enemy, but an unresolved threshold he was never meant to cross.