The Goat Horn is set in 17th Century Bulgaria where, under the semi-feudal Ottoman rule, there was no law to prevent those in power from imposing their baser desires upon the Bulgarian women-folk. It was, therefore, common practice for parents to conceal, or even disfigure, their children for their own protection, for there was no more effective solution. Metody Andonev's film follows the path of vengeance of Kara Tvan, whose wife has been raped and killed by four of the local Ottoman feudal masters. Having disguised his daughter as a boy, and trained her in the masculine art of warfare over a period of ten years, they commence the slaughter of those responsible. The first victim is brutally murdered with a goat horn designed especially for the purpose, and his body is left in the mountains. Two more follow, but before the final execution, the feminine identity of the daughter is revealed when she falls in love with a young shepherd. The idyll of the two lovers is soon to be destroyed as the irreversible chain of events, which Kara Ivan had initiated, moves onwards.