"March, 1588. With England in a state of high alert as King Philip of Spain amasses a vast fleet of warships ready to invade, Queen Elizabeth and her advisors seek a possible alliance with the Duke of Parma, Governor of the Netherlands. But their plans suffer a major setback when one of their most reliable spies is found murdered in the Hertfordshire countryside, shot dead by a crossbow bolt as he was transporting secret correspondence between the queen and the duke."