The movie is based on Yury Vronsky's novel "Miraculous Adventures of Kuksha of Domovichi". The movie (as well as the novel) is excellent, it's a pity Rostotsky is not alive now, he was one of the best Soviet directors
I liked this movie in my childhood, I like it now. The best viking movie I have ever seen and one of the best historical movies. One can see the plot in summary and I will just admit some of my expressions. Vikings' dresses, armor and weapons show the nice picture of their way of life. Rumbles are quite good, but alas! alas! - without too much blood (what a pity for guys who watch stupid cheap action films with brain sparks and disemboweling)! The movie is both for the children and adults. There is a nice and not sickly-sweet love story in the movie: beautiful Petronella Barker's Signu (no doubt the best character in the movie) and Alexandr Timoshkin's Kuksha. Two very interesting characters: Torir and Sigurd. Nobleness, friendship, self-sacrifice one can see all those in "Dragens fange". The quality of a film (22 years old suppose) is not a problem if you watch the digitized copy.