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.

Follows the Bulgarian people's struggle for national independence in the period from 1875 to the Liberation from Otoman bondage.

Constantinople, 1883. During an outing to the Black Island Edith, the adopted daughter of the French ambassador, is saved by Kalin the Eagle. She learns that he is a Bulgarian revolutionary from the April Uprising of 1876. With her help Kalin the Eagle escapes and returns to the liberated Bulgaria, where he is drawn to the socialist movement. Edith finds out that Kalin is in fact her father, and sets out in search of him. Kalin the Eagle is notable as the first movie made by the nationalized film industry after World War II in the newly formed People's Republic of Bulgaria.

This is an epic screen presentation showing the creation, the consolidation and the power of First Bulgarian Kingdom and the first Bulgarian ruler Khan Asparuh. This is the first part of the film trilogy about the events before the creation of the Bulgarian state in the middle of the VII century. Volga Bulgaria is straining under the attacks of the Khazars. Following the testament of his father, the sons of Khan Kubrat looking for a new home for their tribes. The youngest of them - Asparukh, wander 20 years in search of "land forever" for his people and reaches the mouth of the Danube. The film is narrated by captured Byzantine chronicler Belisarius, which should Asparukh in his journeys. Byzantine witnessed the heroic efforts of the Bulgarians to win the land south of the Danube and to create their new country.

The last part of the epic "Khan Asparukh" - "Land Forever" is an impressive finish to scale narrative, created for the nationwide celebration of 13 century anniversary of the Bulgarian state. The authors collected in final chord all storylines, culminating in the political strengthening of the young Bulgarian state. In the center of the film epic again is the image of Khan Asparukh - a lofty romantic hero who embodies the virtues and energy of his people.

This is an epic screen presentation showing the creation, the consolidation and the power of First Bulgarian Kingdom and the first Bulgarian ruler Khan Asparuh. The second part of the great historical epic - "The Migration" - tells about the long journey to the land of the Bulgarians of today's Bulgaria. Here the young Khan Asparukh laid the foundations of the new state. The authors adhere to the established historical versions for this event. The film builds on the impressive mass scenes and the convincing served psychological characteristics of the main characters. The image of Asparoukh is a natural center of the story, in which many minor persons recreate the environment of the Khan. Romantic exalted, Asparukh is shown as capable leader of the people, consistently implement his own ideas.