In the tumultuous year of 1778, Jamie Fraser emerges from a watery grave to find his world turned upside down. His best friend has married his wife, his illegitimate son is reeling from a shocking revelation, and his beloved nephew Ian seeks to marry a Quaker, defying all expectations. As Jamie grapples with these upheavals, his wife Claire Randall and sister Jenny work tirelessly to pick up the pieces.

Meanwhile, in twentieth-century Scotland, their daughter Brianna believes her family is safe. But when her son is kidnapped by a man obsessed with uncovering her family's secrets, the boundaries of time blur dangerously. Her husband Roger ventures into the past to search for their missing boy, unaware that the true threat now targets Brianna herself.

As past and present collide, can the Frasers reunite before their family is torn apart forever?