St. Petersburg, 1900. There is a war between the land and the underwater world: at night, the Sea Devil attacks ships in the Gulf of Finland, and the inventor and industrialist Maxim Naydenov hunts for a semi-mythical monster. Searches Maxim with the mysterious Gala, a girl from the coast, but the hero does not yet know that his lover is not what she seems at first glance, and in this... see more