At the heart of the action is Lucas Hill (Reeves), an American diamond dealer. Once his partner disappears inexplicably, he starts off in Russia, having the prospect of selling rare diamonds of doubtful origin. He is enchanted by the owner of a Russian café in Siberia, Katya (Ularu). As the passion becomes brighter, things are complicated in the deceptive world of diamond traffic. The clash of the two worlds brings the hero into an out-of-the-way situation.