As the Castle prepares for The Gathering, Claire plots her escape. But after a dangerous encounter with a drunken Dougal and an unexpected run-in with Jamie, her plans are dashed.

Jamie and the Highlanders rescue Claire from Black Jack Randall. Back at the castle, politics threaten to tear Clan MacKenzie apart and Jamie's scorned lover, Laoghaire, attempts to win him back.

Claire and Jenny set out to rescue Jamie from his redcoat captors. When Murtagh joins up, they turn to unorthodox tactics to send word to Jamie. When word finally arrives, the news isn't what anyone had hoped.

Jamie and Claire use Claire’s medical knowledge to devise a scheme to stop a wine deal which could fill the Prince’s war chest. When Claire learns Jamie has gone back on his word, the couple are met with dire consequences that will forever change their lives.

Claire and Jamie reunite with the Lallybroch and MacKenzie men as they train for war. Jamie’s power struggles with Dougal and Claire’s personal battle with her memories of WWII weigh upon them, but new, helpful information comes to light when a young Englishman named William Grey pays a surprise visit to their camp.

In the present, Claire reveals the truth to her daughter, Brianna. In the 18th century, Jamie does everything he can to save his loved ones as the Battle of Culloden begins.

Claire and Jamie cross paths with Stephen Bonnet, a pirate and smuggler who enlists their help. Claire illuminates Jamie on some of America's history, leading him to wonder if it's possible for them to lay down roots.

As Brianna struggles to compartmentalize the trauma she's suffered in the wake of the tragedy that befell her in Wilmington, she refocuses on finding her parents.

Following celebrations in honor of Brianna and Roger's wedding, Governor Tryon reminds Jamie of his obligation to hunt down and kill Murtagh Fitzgibbons.

Claire struggles to survive brutal treatment from her captors, as Jamie gathers a group of loyal men to help him rescue his wife. Meanwhile, Roger and Brianna's journey takes a surprising turn.

Jamie's authority is tested when an old rival from Ardsmuir shows up to settle on the Ridge. Claire finds a new way to cope with the trauma of her assault by Lionel Brown.