As Jamie puts all of his efforts into turning the Jacobite army away from the impending slaughter at Culloden Moor, Claire attempts to comfort the sick Alex Randall. She is stunned when Alex reveals an outrageous plan to save the mother of his child.
Jamie's past provides his only hope of survival following the Battle of Culloden, while a pregnant Claire attempts to adjust to life in 1940s Boston.
Claire and the Highlanders are sent north after the Jacobite leaders decide to halt their march on London. A band of redcoats makes trouble for the Scots, leading to a most unexpected reunion for Claire.
Trusting in Claire’s knowledge of “history,” Jamie leads the Jacobite army into a critical battle with British opposition near the town of Preston. Meanwhile, Claire attends to the dead and dying, a reminder of the truest costs of war.