The legend of Sawney and his family of inbred cannibals has been told in Scotland for over 400 years. Their last descendant (David Hayman) lives on today, driving a devilish black cab, stalking the towns and cities, abducting unholy souls for his communion of sacrifices. His insane family wreak slaughter and havoc among their victims, who are then dragged to Sawney's lair in the hills, where they are tortured and cannibalised before the remains are fed to a chained beast in the cellar. As the missing persons list begins to grow, Hamish MacDonald (Samuel Feeney), a crime journalist, writes sensational and damning headlines against the police, due to their incompetence in handling the case. The frustrated Detective Bill Munro (Gavin Mitchell) is under great pressure to catch the serial killer but is hindered by Hamish who constantly gives him bad press. He decides to feed Hamish with privileged information rather than fight against him, just to get results for his superiors. But Hamish decides to investigate the heinous crimes on his own, with disastrous results.