Princess Alesandra has been happily tucked away in a convent, but in 1820 the wicked General Ivan indicates that he has designs on the princess: if he marries her, he can take over the kingdom. Alesandra's guardian, the Duke of Williamshire, brings her to England to assure her safety. Unfortunately, the duke and his wife become afflicted with a "mysterious ailment"; the only solution is for the princess to live with Colin, the duke's eligible bachelor son, in his London townhouse. The duke and duchess think Colin should marry Alesandra. Colin, however, wants no part of marriage; and Alesandra, who alternates between moments of intelligence and sheer vacancy, will marry anyone who won't hand her over to that awful Ivan fellow. When Alesandra is almost abducted by men from her homeland, Colin's protective instincts shift into high gear. Can love be far behind? Also lurking in the background is a serial killer, who threatens Alesandra but serves no immediate purpose in furthering the silly plot.