Upon arriving at London, the Four Musketeers meet with Comte de Guercy, the French ambassador to England, for his help. Guercy and the Four Musketeers attend a party at night thrown by Queen Mary Charlotte and King George III with the intention of obtaining some secret documents possessed by Robert Wood, the British Undersecretary of Foreign Affairs. Mary recognizes Lia, and Guercy invites the former to a party at the French Embassy. George coaxes Wood into going as well. Meanwhile, Maximilien takes Cagliostro and Lorenza to visit Dashwood and Whitehead at Medmenham for their assistance.