Out in the open sea, Ubbe and the settlers are at the mercy of the elements. Tension mounts between Ubbe and Othere and when baby Ragnar begins to weaken, it's the final straw for Ubbe. Meanwhile, Ivar and Hvitserk return to Kattegat.

Cast: Alex Høgh Andersen, Marco Ilsø, Jordan Patrick Smith, Georgia Hirst, John Kavanagh, Eric Johnson, Peter Franzén, Ray Stevenson, Noah Syndergaard, Lucy Martin, Finn Gillespie, Noella Brennan, Ian Lloyd Anderson, Alexander Campbell, James Oliver Wheatley