France 1792: the persecution of Aristos is underway and beheading machines – Louisettes – are being set up.Many Aristos have already fled, including the Count of Poitiers, who has settled in England. He returns to France on business and is arrested by militia under the command of Pierre Chabot, a member of a Revolutionary Committee who is trying to spread unrest throughout Europe.Meanwhile, his son, a midshipman in the French Navy, arrives in England and is abducted on Chabot’s orders. He is saved by Dr Russell, an associate of a secret agency run by Sir Horace Markham. His presence sparks a rescue attempt by ‘Markham’s Irregulars’ an unconventional military unit armed with some unusual weapons…