Angela Graham has been living well above her means in London and after losing heavily at the roulette wheel one night on Park Lane she is now completely broke.

She is forced to give up all hope of Lord Cherwell, the charming, friendly but breezily evasive Englishman she had struck up a close friendship over the past months.

As she journeys across France via Paris to the villa on the French Riviera, the prince's behaviour is erratic and he explains that this is due to his fears of assassination by Bolshevik enemies.

Angela's primary job is to accompany the party to the various casinos along the coast including at Monte Carlo, where she generally plays on behalf of the princess.

Popeau of the Sûreté arriving on the Rivieria to track a gang of confidence tricksters making a fortune by creating fake plaques to cash in at the casino, takes special notice of the naïve Angela and the Prince who is already well known to him.