A romantic adventure in old New York -- on the eve of the revolt of 1775 -- engages young James Coult, heir to the powerful Coult and Company, merchant bankers in London. For his worldly uncle Ruthven sends him to the new country to get back the control of the branch there and James, with his man servant, arrives to find there vigorous efforts being made to keep him from succeeding. One Captain Sephard is particularly active; Luisa, the stepdaughter of a recently deceased uncle, perseveres in keeping him in ignorance; the French d'Array maintains a close watch; even The Sons of Liberty show more than a little interest. The focus of their attentions is a cargo of arms and ammunition and James, at last convincing Luisa of his good intent, is able to make its delivery to the right people. Playing a lone hand in a strange country and getting to know a new breed of determined men makes for agile action in the polite tradition.