A closed schoolboy, Miron, has no friends, his parents constantly quarrel, and his grandfather is completely immersed in his own affairs. At school they make fun of him and don't want to play basketball because of his hearing aid.

Cheburashka gradually gets used to life with Gena, but like any growing child, Cheburashka begins to show excessive independence, and sometimes even become a hooligan. They live happily until their peaceful life is disrupted by an incredible event. In the second part, not only the already beloved heroes will remain, but also new, unusual characters will appear.