Space pirate Veselchak U is stranded on Earth in the present day after a run-in with Alisa Selezneva, her mother, and high school students from a Moscow school. More than anything, he wants to seize the cosmion, return to his own time, and finally lead the Pirate Alliance. His search for the artifact leads him to a boy, Yura, and his mother, Katya, who are mysteriously connected to the cosmion. When the powerful space warrior Theo begins hunting them, Veselchak is forced to defend Yura and Katya-for he is a noble pirate. Together, they embark on a dangerous journey filled with adventures to uncover all the secrets of their past and future.