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.

　　Twin babies are separated at birth. The girl grows up in a middle class environment, her brother in a street gang. Twelve years later, their paths cross again and they discover their common destiny, imposed upon them by the adults. It is the beginning of an exciting journey to the discovery of their roots and their independence, but neither of them is able to escape the past...