Jamie relies upon Claire's knowledge of history to lead the Jacobite army into a crucial battle. Claire is reminded of the true cost of war as she attends to the dead and dying.

Claire and the Highlanders head north after the Jacobite leaders decide to halt their march on London. Claire has an unexpected reunion after a band of redcoats makes trouble for the Scots.

Jamie works to divert the Jacobite army away from imminent slaughter. Claire tries to provide comfort to a sick Alex Randall who shares an unusual plan to save the mother of his child.

Jamie's past provides his only hope of survival following the Battle of Culloden. A pregnant Claire attempts to adjust to life in 1940s Boston.