Claire (Caitriona Balfe) and Jamie (Sam Heughan) arrive in France, hell-bent on infiltrating the Jacobite rebellion led by Prince Charles Stuart (Andrew Gower) and stopping the battle of Culloden. With the help of Jamie's cousin Jared (Robert Cavanah), they are thrown into the lavish world of French society, where intrigue and parties are abundant but political gain proves far less fruitful. Altering the course of history presents challenges that begin to weigh on the very fabric of their relationship - but, armed with the knowledge of what lies ahead, Claire and Jamie must race to prevent a doomed Highland uprising and the extinction of Scottish life as they know it.