In the late 18th century, intent on avenging her family's death at the hands of a cult leader, Lady Leigh Strachan dresses as a boy and seeks out the reclusive S.T. Maitland, nobleman and highwayman, who was once known as the Prince of Midnight. Hiding in a crumbling castle in France, with a tame wolf as his pet, the hero is deaf in one ear, suffers from vertigo, and seems revoltingly sentimental to the stoic Leigh. But he joins her quest and together...