An experiment in bovine genetic modification goes horrifically wrong in writer/director Billy O'Brien's debut feature. John Lynch stars as Dan, a cattle farmer in the remote Irish countryside, whose ex, Orla (Essie Davis), a veterinarian, has convinced him to take part in a profit-driven experiment on his cows, run by John (Marcel Iures), an officious scientist who seems very concerned with maintaining secrecy. Orla is conducting a routine check on a pregnant cow, and her hand is inside the animal, checking the unborn calf, when something bites at her. John is called to the farm, and reassures them that the safety checks were all okay. He's more concerned with the presence of a caravan just outside the farm occupied by Jamie (Sean Harris) and Mary (Ruth Negga), a desperate young couple who are apparently hiding out from something.