This is the story of how the disparate Anglo Saxon communities eventually consolidated into 7 kingdoms covering what we now know as England and how they each vied for supremacy.
Back in the 600's, Raedwald of East Anglia becomes "Top Dog" when he defeats the Northumbrians but when he dies, so does the prominence of East Anglia.
Northumbria then become the leading power in the land and try to push their influence into the land of the Picts.
Eventually, it is the turn of Mercia and their king Offa.
In fact, it is looking like the final power-play will be between Mercia and Wessex when some ships are sighted off the island of Lindisfarne on the North East coast of England....