Bolshoe kosmicheskoe puteshestvie

Three youngsters, Sveta Ishenova (Ludmila Berlinskaya), Fedya Druzhinin (Sergei Obrazov), and Sasha Ivanenko (Igor Sakharov), embark on a simulated space flight when their adult captain, Egor Kalinovsky (Pavel Ivanov), falls ill and must quarantine himself. As they navigate short-term emergencies and the true nature of their mission, the children discover they have been part of a psychological experiment designed to test the prospects of a real children's space flight. Despite the revelation, the three teens ultimately succeed in escaping the simulator and reaching the surface, earning them as heroes.