A United Empire Loyalist family flees from Boston to New Brunswick during the American Revolution. In late October, 1785, they host a reunion, and are joined by two veterans and a stranger whom they assume also to have been a former soldier on the Loyalist side. But the stranger reveals himself to be a Rebel seeking to avenge the death of his brother; at gunpoint he demands that the others choose one among them to be executed at first light.

First performed by the Stratford Festival in 1993, Fair Liberty's Call has since been frequently produced across North America.