A crew of hardy road workers, led by a bickering Father and Son, must survive the night when they accidentally awaken an ancient Irish vampire.

Within the course of one night, Woody Harrelson finds himself in a misadventure in London that winds him up in jail.

Twentysomething Alan (Gleeson) is down on his luck. Stood up at the altar and recently fired from his banking job, he finds himself working with his mother as a part-time tourist advisor at Dublin Airport. It's there he comes face...