A fire at a homeless encampment leaves Severide and Casey searching for answers. Cruz is shaken up after a close call. Ritter lends a helping hand to a victim.

Ubbe and the settlers find land, but soon realize they’re not alone. In Wessex, King Alfred has mustered a large force to meet the Vikings. Meanwhile, in Kattegat, Erik realizes that Ingrid has been using her powers against him.