In the evening, the boy Zhenya sat by the window and looked at the starry sky. Suddenly one star fell. The boy climbed out through the window into the courtyard and went to search for it with the dog Sharik. Having found the fallen asterisk, Zhenya hid it in a drainpipe. The next day the boy showed it to his friends Mishka and Alyonka. The children decided to return the star to the sky and began to seek help from adults, but all either waved away, or could not reach the sky. And only with the help of an astronaut on a rocket it was possible to attach an asterisk to its place.