The dentist of the provincial town of Upper Yamki made an unexpected scientific discovery by finding the thirty-third tooth in the patient’s oral cavity, Ivan Sergeyevich Travkin. Travkin, exhausted from pain, was taken to Moscow. Ivan Sergeyevich first becomes a patient of a madhouse (thanks to envious persons), and then — a hero of a scientific international conference and, finally, a patient of a dentist professor Bruk.

The movie tells about the first years of Nazism. In the center of the plot is a German student graduating from an institute and receiving a diploma with a gold medal for success in science. The same is honored by his Jewish friend Joseph Voltmeyer. During the solemn ceremony, Nazi students provoke a fight, beat Joseph and Ruddy, who stood up for him.

Before the attack on the village, captured by the Nazis, the commander decides to carry out a distraction — a concert of the front-line brigade of artists. Chef Antosha Rybkin is assigned to play the role of... a German corporal. Dressed in an enemy uniform, he gets to the rear of the enemy and helps his liberate the village.

A Moscow group of Komsomol members arrives on the virgin lands, in the Kazakh steppes, and immediately faces bureaucracy and carelessness. Someone flees the state farm for more reliable earnings, and someone simply does not want to work. But a new energetic director appears — and real life begins...