Boris I - Part 1 - The Baptizing is a historical drama that follows the early reign of Boris I, the ruler of Bulgaria in the 9th century. The movie explores his challenges, triumphs, and the political dynamics of the time. It offers insights into Bulgarian history and the significant events surrounding Boris I's rule.

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.

Two friends from their student years are dating. One of them is the director of a peasant school, and the other is an impresario in show business. Memories bring them back to their youth. What have they lost and what have they kept over the years? These questions are answered by the heroes at dawn, after a stormy night.