Ragnar picks the distraught Athelstan and returns home.
Siggy chides Rollo for not paying attention to his own advancement and sleeping with other women.
Meanwhile, Earl Haraldson marries off his daughter, Thyri, to an elderly earl from , against his wife, Siggy's, wishes.
Haraldson has Rollo seized and tortured in an unsuccessful attempt to discover Ragnar's whereabouts.
Ragnar kills Haraldson and Siggy kills Bjarni.
Bjorn and Ragnar visit Floki, Ragnar's friend and a gifted shipwright, who has been secretly building a new type of , which they successfully test.