Olaf makes a pact with Kåre as Kattegat prepares for its defense. In Canute's absence, his father, Sweyn Forkbeard, shares England's throne with Edmund.

Olaf and Kåre gather their forces to invade Kattegat. Palace intrigue over control of England's throne results in an unexpected turn of events.

Olaf lands in a terrible position after Forkbeard invades Kattegat. In hiding, Freydis and Harald must decide whether to fight for the throne or flee.

While preparing for a journey to Constantinople, Harald assembles an unlikely crew, each with their own motives. Emma suspects Godwin of treachery.

The travelers make a deadly miscalculation on the way to Constantinople. Olaf sets off after Harald, and Emma's paranoia pushes her over the edge.

Harald learns a devastating secret. The group encounters a dangerous stranger. Harekr reveals his true intentions for the future to Freydis in Jomsborg.

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.

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

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.

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.