The disappearance of Russian actress Oktyabrina Zelenova during a spaceflight became a major mystery of the 21st century. Reopening the case, a British journalist discovers that Oktyabrina had taken the place of Vuk Sabljozubić — a Serbian cosmonaut candidate who was supposed to be on that very mission. But on the day she vanished, Vuk disappeared too. Three years later, the journalist finds him in Rijeka — disturbingly younger and finally ready to reveal what really happened.