[1][2][3] The film tells about a schoolgirl Nastya, who always invents outlandish stories, as a result of which she quarrels with a teacher, classmates and sister.

[4] Nastya Ryabinina loves to dream and imagine, but her homeroom teacher Maryana Borisovna, some classmates, and her older sister Sveta believe that she is lying and should stop telling her made-up stories as if they were real.

Nastya tells her classmates about her friendship with a black panther, claims that her mother went to a beautiful city called Aeolis (which doesn't appear on any map), and describes her sister’s friend Sasha Zharikov as a pilot who was kidnapped and held captive by aliens.

In reality, Nastya's mother works at "Aeolis," which stands for Experimental Operations in Construction "Lisichka."

Nastya is formally welcomed into the Pioneers during a solemn moment of silence at a monument honoring fallen soldiers.