The film is based on the conflict between the Monarch of Bulgaria -Tsar Boris III and general Vladimir Zaimov during the Second World War and discusses different understandings about heroism and self-sacrifice.

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.

Abundant supplies of imported vaccine prove ineffective against an outbreak of foot-and-mouth disease epidemic in several population centers. Warehouse manager Rashkov has been found dead. Major Zahov has to investigate the case.

The young Bulgarian Muslim woman Zyulker wants to study and become a teacher. Her father decides to arrange a marriage to her. After the wedding, she runs away and goes to the town. There she starts work in a hostel. Her husband takes her back. He beats and humiliates her. She gives birth to her child prematurely, takes the baby and goes to the school for Muslim in the town. She has to surmount many difficulties. The young woman meets her first teacher Stefanov. The two fall in love. With his help, Zyulker finishes her study successfully and makes up her mind to return to her native village as a teacher. Stefanov follows her and proposes to her. The two embrace.

A young journalist comes across interesting report material: talented marine engineer Maria died while on duty. Her story turns out to be quite a puzzle though - people who knew her are not willing to share much. Trying to make them speak, the journalist presents himself as her son. He hopes to dig up the truth about her and spares no effort, ending up at the bureau for investigation. The report he's writing never gets published but his belief system certainly gets challenged.

Three young men, who have become friends while doing their national service, make their way in the world.

Part one of this two-part epic follows the life and deeds of Boris I – a strong historic personality, which completes his mission to the full and at the end of his life receives holy orders.

Knyaz Boris I reached the most important spiritual insight - the country needed a single language and script. It accepts students of Cyril and Methodius, creating Ohrid and Preslav Literary School. What other nations took centuries, for bulgarians takes place only about 20 years after their baptizing - introduced a Slavonic Alphabet.

Kirill, a 19 year old boy whose father works as a construction director, wants to study filmmaking.