Hawkeye saves Virginia merchant William Shields and his wife when they're ambushed by hostile Indians on their way to open a trading post at Fort Bennington, but then Shields is captured by the French through the machinations of his treacherous brother, an officer at the fort.
Elizabeth talks Hawkeye into guiding her to the French fort so she can negotiate for the release of her husband, but they step right into the middle of the war.
After Elizabeth's encounter with a bear, she decides to take lessons from Hawkeye in wilderness-survival skills, in exchange for teaching Hawkeye how to read, but ammunition thieves bent on selling their stolen goods to the French interrupt them.
When a stranger offers, for a hefty fee, to lead Elizabeth to where her husband is being held, the suspicious Taylor and Hawkeye insist on going along.
The brother of a man Taylor had executed seeks revenge by luring the captain and Elizabeth on a business expedition that will lead to their capture by the French.
Taylor has Hawkeye tried for treason when the captain is shot soon after a heated argument between the two men, but Hawkeye's sense of honor hinders Elizabeth's efforts to prove his innocence.
An old friend appeals to Hawkeye to help free her brother-in-law from his captors, but the French have put a bounty on Hawkeye's head and everyone is trying to kill him.
Elizabeth's husband returns from captivity, but while she struggles to make a decision about her future, Chingachgook questions William's association with a shaman who practices ""black arts.""