The growing Regulator threat forces Jamie, Claire and Roger to embark on a mission to raise a militia.

Roger leads Jamie's militia to the trading post of Brownsville and finds himself embroiled in a bitter feud. Jamie and Claire arrive to find that Roger's unusual strategy may have cost them the loyalty of the militia.

The Regulator Rebellion reaches a boiling point, forcing Jamie to face his fear and confront the consequence of his divided loyalties.