Full episode spoilers.
Bjorn leaves Ubbe in charge of Kattegat and sails to rescue Harald from Olaf. Before leaving, he sleeps with Ingrid despite reassuring Gunnhild that he loves her. His expedition then attempts to approach Olaf's position through the water. The defenders are ready: arrows strike the swimmers and fire blocks their route back to the ships. Bjorn's attempted surprise attack ends in retreat and heavy losses.
Ubbe announces plans for trade missions, including a journey along the Silk Road that he wants Hvitserk to lead. Hvitserk is absent and remains tormented by visions of Thora and Ivar. Meanwhile, Lagertha agrees to care for Torvi's children when their parents eventually sail west. Torvi refuses Ubbe's suggestion that her pregnancy should also keep her at home. Their voyage remains delayed while Ubbe governs for his brother.
In Rus, Oleg captures Dir and has him tortured, then keeps him in a cage and treats him like a dog. Ivar is disturbed by the spectacle and by Igor's amusement, even as he continues to build a friendship with the boy. Back at Lagertha's farm, women report that raiders have attacked their settlement. The attackers are men Bjorn banished from Kattegat. Knowing they will return for more supplies, Lagertha retrieves her buried sword and prepares to defend the villagers.