In the Eighteenth Century, in a small village in Ireland, Redmond Barry is a young farm boy in love with his cousin Nora Brady. When Nora engages to the British Captain John Quin, Barry challenges him for a duel of pistols. He wins and escapes to Dublin, but is robbed on the road. Without any other alternative, Barry joins the British Army to fight in the Seven Years War.
A wounded criminal and his dying partner take refuge at a beachfront castle. The owners of the castle, a meek Englishman and his willful French wife, are initially the unwilling hosts to the criminals. Quickly, however, the relationships between the criminal, the wife, and the Englishman begin to shift in humorous and bizarre fashion.