Plotting to avenge a massacre in England, Viking armies converge in Kattegat — but siblings Leif and Freydis exact a different kind of retribution.

On a pilgrimage, Freydis and her party are savagely attacked. Harald and Leif seek a route through the marshes near London as Edmund is crowned king.

Leif proposes an audacious assault on London, one that Emma and Godwin fear their brash and headstrong boy-king, Edmund, will be too reckless to defeat.

Schemes, betrayals and politics rule the day as a new monarch takes the throne of England. Leif is hailed as a hero but secretly questions his faith.

Freydis returns to Kattegat and joins a sacred order. Canute solidifies his power in England. Kåre revisits the holy site of a childhood trauma.

Emma prepares to defend the throne. Magnus and Harald vie to be King of Norway. Unbeknownst to each other, Leif and Freydis both return to Kattegat.