Season 4 completes new missions as Aethelflaed appears to be preparing for war, and Aethelflaed and Uhtred appear as an ally with Welsh to face Cnut's A-Warrior Army at the Battle of Tettenhall during this period. It seems Aethelred might regret what he did while a prostitute competes for control of Mercia and Edward uses his niece Aelfwynn as a tool in order to do what they want.
