Weary of battle, Thors traded his sword for a peaceful family life, which allowed his son, Thorfinn, to grow up on tales of a near-mythical Vinland. But nothing lasts forever...

Thors' past comes back to haunt him when the Jomsvikings arrive in his village looking for recruits to fight in the escalating war between England and Denmark.

Askeladd, the leader of a Viking army of a hundred men, receives orders from Floki of the Jomsvikings to kill Thors, who was once known as the Troll of Jom. However, the villagers, completely unaware of the order, buzz with excitement as they prepare for their first battle. Thorfinn also joins in the excitement. Thors and his men are about to embark on a difficult sea journey to England.

Askeladd and Thors are unparalleled warriors, but Thors has people he must protect. To save them, he challenges Askeladd to a duel.

Thorfinn will never forgive Askeladd. Ever. As hatred takes root in the youth's heart, the life Thors never wanted his son to have now seems inevitable.

An ambush should have been the end, but the English underestimate Vikings at their own peril. Amidst the fighting, Thorfinn takes his first kill. The first of many...

Now a battle-hardened veteran, Thorfinn negotiates an alliance with the Franks on the behalf of Askeladd's band.

The day has come for the fateful duel with Askeladd. Thorfinn has speed and the advantage of youth, but Askeladd has experience and brutal cunning.

The Danish cannot proceed so long as Thorkell the Tall guards the London Bridge. Thorfinn challenges the giant in exchange for a promise.

A dream turns into a nightmare. Unable to sleep, Thorfinn finds himself at the ruins of an ancient civilization.

Ragnar's followers surrounded Thorkell and his men and demanded the release of the captives. Unfortunately for them, Thorkell is about to do something unexpected.

Prince Canute is now in the custody of Askeladd's band, but they are all still in danger; Thorkell hasn't given up pursuit yet.

Askeladd must secure safe passage with the messenger of Brycheiniog and faces opposition from Ragnar over Chaute's involvement in the negotiations.

Askeladd desperately needs winter supplies. Meanwhile, in a nearby village, a young woman worries about the sin she committed, unaware that it might have saved her life.

Canute is too naive to be an effective leader. Realizing this, Askeladd plots to murder the young prince's innocence.

A prisoner taken from an English ambush leads to a shocking revelation and a mutiny amongst Askeladd's men.

Askeladd faces an insurrection, and the threat of Thorkell. By all accounts, Askeladd is finished. But the cunning warrior didn't get this far through leadership alone.

Thorfinn faces his most powerful opponent yet: Thorkell the Tall. Both want to kill Askeladd, but only one may earn that privilege through a duel.

Thorfinn cannot win with strength alone. While Thorkell allows a temporary truce to their duel, Thorfinn and Askeladd debate about how they can both survive.

Sometimes, a political enemy is far more dangerous than the enemy on the battlefield.

Thorfinn runs into an old acquaintance who offers him a way home. But Thorfinn has chosen his path and is determined to see it to its end.

There is a reason Thorfinn cannot defeat Askeladd in a duel; Askeladd's past forged him into the person he is today, and he and Thorfinn share similarities.

Sometimes, the course of history hinges upon a single moment. For Askeladd and Thorfinn, that moment is quickly approaching.

Askeladd comes forth before King Sweyn and implores him to halt his invasion of Wales. Meanwhile, Thorfinn decides to return home at Leif’s urging. However, the moment before he boards the ship, Thorfinn catches a glimpse of a single tern taking off into the sky...