Based on the Kenneth Roberts novel of the same name, this film tells the story of two friends who join Rogers' Rangers, as the legendary elite force engages the enemy during the French and Indian War. The film focuses on their famous raid at Fort St. Francis and their marches before and after the battle.

Philadelphia socialites Tracy Lord and C.K. Dexter Haven married impulsively, with their marriage and subsequent divorce being equally passionate. They broke up when Dexter's drinking became excessive, it a mechanism to cope with Tracy's unforgiving manner to the imperfect, imperfections which Dexter admits he readily has. Two years after their break-up, Tracy is about to remarry, the ceremony to take place at the Lord mansion. Tracy's bridegroom is nouveau riche businessman and aspiring politician George Kittredge, who is otherwise a rather ordinary man and who idolizes Tracy. The day before the wedding, three unexpected guests show up at the Lord mansion: Macaulay Connor (Mike to his friends), Elizabeth Imbrie - the two who are friends of Tracy's absent brother, Junior - and Dexter himself. Dexter, an employee of the tabloid Spy magazine, made a deal with its publisher and editor Sidney Kidd to get a story on Tracy's wedding - the wedding of the year - in return for Kidd not ...