London, 1605. Robert Catesby, a 33-year old Warwickshire gentleman, devises a plot to blow up Parliament and kill the King. England, 1603. Elizabeth I is dead and King James of Scotland has taken the throne. With the country at war with Catholic Spain, English Catholics are persecuted and priests caught saying Mass are punished with death. Several attempts have already been made on the new King’s life. All so far have failed. But deep in the heart of the Warwickshire countryside a new plot is brewing. A plot that will become legend, and leave a mark on the country that will still be felt over 400 years later.