Bud and Lou are the owners of the amusement park Kiddieland. Bud, a compulsive gambler, gets in trouble with the mob, and Lou finds himself struggling to keep his adopted children. When Bud is forced to make a shady deal, Lou tries to arrange a deal with the DA, but winds up framed for murder.

Set in the 18th century, the film recounts the exploits of Rogers' Rangers, a band of adventurers devoted to seeking out a "northwest passage" through Canada. At this juncture, however, Major Rogers is more concerned with helping the British forces at Fort Ticonderoga during a series of French and Indian raids. Fort Ti was filmed in 3D, and in typical William Castle fashion the stereoscopic gimmick is exploited to the hilt.