In 1776, an inventor conceals a Polish nobleman in his chess-playing automaton, a machine whose fame leads it to the court of the Russian empress.

In the Crimea, the Reds and the Whites aren't done fighting, and Jeanne discovers that the man she loves is a Bolshevik (when he kills her father). Penniless, she returns to Paris where she works for her uncle. Soon after, her lover Andreas is in France to organize the sailors in Toulon. So also is a thief, traitor, and libertine, Khalibiev, who wants to seduce Jeanne. His schemes, Jeanne and Andreas's naivete, and a lost diamond bring the lovers to the brink of tragedy.