A humble scientist from Padua proves that the Earth revolves and that it is not the center of the universe.

1197. King Kaloyan ascends the throne in hard times for Bulgaria. The country is still recovering from a century of Byzantine subjugation. He is forced to carry out a very flexible foreign policy in order to strength his positions. Pope Innocent III recognizes him as Emperor (Tsar), but a little later the fourth Crusade crosses the country under Emperor Baldwin. A new conflict is coming. Tsar Kaloyan wages the decisive battle at Adrianople and wins.

Bulgaria. 13th century. The people, driven to utter despair, rise in arms. They elect Ivaylo - a poor peasant but gifted military commander - as their leader. Ivaylo's army overruns the Tatar invaders and the royal troops. In a decisive battle with the royal army, Ivaylo defeats and slays King Konstantin Asen. To prevent a betrayal on the feudal nobles, who intend to open the gates of the royal capital to Byzantine army, Ivaylo sacrifices his personal happiness, abandons his sweetheart and agrees to marry the widowed queen.

A Bulgarian socialist drama

Mityo Ganev is a leader of the armed bandits. The authorities accuse the Communists of his robberies. The detachment commander, Chalaka, and Mityo Ganev have a meeting but fail to reach an agreement. The police burn out Mityo's house and send his mother into internal exile. Chalaka cuts him off from his logistical support base. Mityo agrees to join the partisan detachment. Mityo and Velyo hold up the paymaster of the army garrison. When they take the money, Mityo wants to give it to the family of the exiles. Enraged, Velyo hands the detachment over to the Colonel. Mityo kills the traitor. The police and he army launch a major operation against the partisans. In a fierce battle, Chalaka leads the detachment out of encirclement while Mityo covers their retreat. A bullet hits him.

In a rural Earth village, love and betrayal run high as an innkeeper and a horse owner vie for the affections of a young woman. Greed and gossip threaten to tear the village apart, leading to unexpected consequences.