The city of Nizhnevartovsk was lucky: all the income from the Samotlor deposit settled there. But Shevelevo, which is 50 km away, is devoid of oil, money and infrastructure, and is far from the benefits of civilization. But one almost imperceptible earthquake shifts something in the earth's crust, and the well of local plumber Semyon Plakhov suddenly fills with oil instead of water. Now Semyon has two ways: to give up the plot for a song or somehow master the extraction, processing and marketing. To prove to his wife, who wants to get a divorce and leave him with her son, that he is worth something, the quiet and calm Semyon, together with the local gifted freak Ulyan, develops underground oil production and tries to build "the most honest dishonest business."