Three drug-dealers are planning to land half a billion dollars’ worth of cocaine off the west coast of Ireland. The only men standing in their way are straight-laced FBI Agent Wendell Everett (Don Cheadle) and Gerry Boyle (Brendan Gleeson), an unconventional, hard-living and over-the-hill Galway Guard with a dying mother, a fondness for prostitutes and a heightened sense of the absurd.