Maro is sentenced to prison for participating in the workers' unrest, his orphaned boy is adopted by a rich manufacturer. Years later, Maro learns that the prosecutor Mamulov, who is trying Maro's fellow revolutionaries, is his lost son. Maro asks him to lighten the sentence, but the prosecutor does not recognize the woman as his mother and throws him out of the house. At the trial, during the announcement of the death sentence, Maro will kill his son with a revolver.

In the mountains of the Caucasus, a large supply of the much-needed ore - andesite has been discovered. To get it quickly, the leadership decides to blow up Arshaula mountain. But the mountain is considered "sacred" and, according to believers, is inviolable. The kulaks try to prevent andesite mining and spread rumors about the family of its head, Levan, and drag his wife, father-in-law, Berdia into the conflict and recruit them to their side. At the village meeting, it will finally be decided to blow up the mountain. The village will move to a new place, but Berdia continues to resist. Mojagire's purchase exposes him, which is why Birdia decides to kill him. Before the explosion, he goes to collect loot hidden in a tower near the mountain and takes the purchase with him. He finds himself trapped in the purchased tower and dies in the explosion. A horse loaded with property is in the hands of the militia, its owner is recognized and Berdia is arrested.

The film tells about the struggle of the Georgian people under the leadership of the great commander George Saakadze for a centralized state.