In 1602 the English forces attacked and took one of the most important strongholds in Ireland Dungannon.

In the heart of Ulster, Dungannon was the seat of the O'Neills the most powerful family in Ireland, allied to France and Spain and enemies of James I.

At least two castles have stood on the site, as well as grand English houses and a fortified town, regularly attacked by invading forces.

The Team's quest is to find evidence of the O'Neills' fortress.