The space pirate Veselchak U got stuck on Earth in our time after a run-in with Alice Selezneva, her mother, and high school students from a Moscow school. More than anything, he wants to take over Cosmion, return to his own time, and finally lead the Pirate Alliance. His search for the artifact leads him to the boy Yura and his mother Katya, who are mysteriously connected to Cosmion. And when the powerful space warrior Theo starts hunting for them, the Merry Man has to stand up for Yura and Katya — after all, he is a noble pirate. Together they embark on a journey full of dangerous adventures to uncover all the secrets of their past and future.