Despite Askeladd and his crew being sure Thorfinn would eventually die of hunger, thirst, and/or exposure on the captured ship, he survives long enough for them to sail into the Humber for a brief stint in England. At first his thirst for revenge outweighs everything, but he slips on some moss and gets knocked out by a tree trunk. Defeated by his surroundings before he’s anywhere near the enemy.
He awakes in a gorgeously lit forest and finally drinks some fresh water. He’s so surprised to still be alive he even manages to smile and laugh, but that cheerful mood doesn’t last when he starts to hear screams and spots flames in the distance. Askeladd’s men have decided to spend their “resting time” doing what they apparently do best: rape, burn, and pillage.
Once things die down Finn sneaks into the village and finds the hut where Askeladd is sleeping, unprotected. Eschewing his dagger for an unwieldy longsword, he raises it in preparation to behead his father’s murderer, but stops and retreats, much to the surprise of Askeladd (who was briefly roused before going back to sleep.
In the morning, it’s confirmed why Finn stayed his hand: he’s his’ father’s son. Stabbing a sleeping man in the back isn’t his style; he wants a proper duel with Askeladd. Unfortunately Finn is absolutely no match for Askeladd, especially when he’s letting his sword swing him. He gets a brutal kick to the gut, but that’s all he gets.
Back in Iceland, Leif and the rest of the crew return and inform Helga and Ylva of Thors’ honorable death, and promise to not rest until they’ve found Thorfinn. Ylva, bypassing several stages of grief, flies straight to detatched acceptance and gets back to work, reacting to the news with little more than a shrug and by admitting she figured he’d get killed one of these days.
Neither Ylva’s friends nor her mother are buying what she’s selling—that she feels nothing for what has happened and merely wants to move on—and this is most powerfully illustrated when Ylva is working on a loom late into the night and Helga puts her hands on hers to stop her.
Only then, when Ylva stops—working, busying her mind, simply stops—do tears start to flow, almost despite herself, from her crystal blue eyes. Then Helga draws her into an embrace of shared grief and comfort. Will Ylva stay with her mother, perhaps the only family she has left, or join Leif on the search for her kid brother?
As we know, she still has a brother, who simply refuses to die. While Thorfinn won’t accept scraps from Askeladd’s men when they’re offered, he comes back later to eat what little meat is left and suck out the marrow. He has a chance encounter with Bjorn (collecting mushrooms), who treats him as little more than an irritant, but tells him that while his father was indeed strong, he was also naive. Finn isn’t even strong, not yet, which means he doesn’t have a chance.
Taking that to heart, Thorfinn continues training in the forest, and one night encounters a hungry wolf. Remembering Askeladd’s words about being swung by his own sword, Finn ditches the huge weapon for something much more suited to his size: the dagger Thors gave him. He then kills his first wolf, learns to throw a dagger, kills his first rabbit, feeds himself, recovers some strength.
As Askeladd and his men prepare to depart, having stayed longer than originally planned, Thorfinn confronts him one last time with yet another duel challenge. This time, he shows Askeladd a lot more, and even surprises him with the thrown dagger, but Finn is still nowhere close to being a threat.
Demonstrating he has at least some heart and empathy for the kid’s plight, Askeladd refuses to kill him, and instead makes a promise: if Finn becomes stronger and distinguishes himself in battle, he will honor the duel at a later date. The implication is, he must first join Askeladd’s crew. Knowing that as much as he might want to avenge his father, he’s still too young and weak, Finn agrees, and a truce is struck.