Complete story — includes the ending
The Vikings attack Paris. Lagertha, Kalf, and Erlendur lead an attack on the city gate; meanwhile, Floki, Ragnar, Bjorn, and Rollo try to breach the walls from boats on the river. Princess Gisla manages to restore faith in the Frank troops by revealing the Oriflamme, the holy banner of their patron, Saint Denis. Eventually, the defense holds, repelling the Vikings with the use of oil, fire, and crossbows. While the Franks celebrate their victory, at the Viking camp the warriors have to deal with their wounded, including a badly wounded Bjorn, and Ragnar who has been thrown down from the walls. Floki is consumed by his guilt, having trusted in the good omens of their gods. Helga, disgusted by his selfishness, leaves him.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Vikings season 3. HTML formatting and reference markers removed. · Content license