A wagon master and a con-man preacher help freed slaves dogged by cheap-labor agents out West.

Travelers heading west in a wagon train, under repeated assault by Indians, discover someone in their group is supplying rifles to their attackers.

When Aaron Baring signs on as wagon master for a group of settlers headed to Montana's Powder River Valley, his dictatorial style soon creates problems. When the settlers reach their destination, Baring unwisely declares war on the local Indians. When savvy frontier scout Jim Henry tries to promote cooperation between the natives and the newly arrived settlers, Baring responds by having Williams whipped.