Ragnar and Lagertha's fleets depart Kattegat once more for Wessex but this time they bring settlers. King Ecbert hosts the Vikings and proposes a deal. Despite the misgivings of some of the other leaders, Ragnar leads his forces into battle once more, but this time as allies of Wessex.
A dedicated, strait-laced FBI agent and a street-smart CIA agent are part of a new, clandestine taskforce charged with solving and preventing domestic terrorism in and around New York City.
