Pierre, a French Canadian trapper, and Captain Humberstone Lyon, another Scotsman, who fought in the Battle of Waterloo, join Flint on the dangerous expedition. Kamiah successfully guides Flint and his men on their trek through the high passes filled with crippling snow drifts, and delivers them to the Blackfoot territory, where they build a stockade. Flint narrowly escapes capture and death at the hands of Ironshirt, a young Blackfoot prince and war chief, who kills Baptiste DuNord, one of Flint's best trappers. Ironshirt steals the brigade's horses, but Flint impresses Bear Ghost, who orders them returned.