Gu-won inexplicably loses his power — and finds that Do-hee might be the key to regaining it. But his efforts to take back his abilities backfire.

An accidental date with Jeong Gu-won leaves Do Do-Hee feeling flustered. She later becomes a victim of an attack — where a rescue requires a contract.

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.

Freydis confronts Erik over his schemes to make her stay, Canute declares a successor and Harald devises an escape plan.

Freydis reunites with her father, Erik the Red. Leif befriends mapmaker Calinicus, Canute returns to London and Harald gets caught in a bad situation.

Leif meets an unusual nun on his way to Corfu, Freydis devises a plan for Magnus’ imminent arrival and Harald’s indiscretion worries his friends.

As the Byzantine army returns to Constantinople, Leif agonizes over the Syracuse horror. Magnus sails to Jomsborg as Freydis’ people begin to heal.

Harald fights the Emir for control of Syracuse. Something causes the Jomsborg townsfolk to fall ill. Magnus Olafsson unexpectedly arrives in Kattegat.

Harald and Leif help Romanos lay siege at Syracuse. Canute travels to Rome to meet with the Pope. A new arrival in Jomsborg catches Freydis’ eye.

Leif says a painful goodbye. Harald’s new love is not what she seems. A key battle comes to an end, but the war to rule over Norway is just beginning.