Vitya Kasatkin has an unusual hobby - he is engaged in Japanese sumo wrestling. His love for sumo was instilled in him by his father, who left the family 8 years ago and went to Japan. For many years, the boy has been living with one dream - to get to a youth tournament in Japan, in the hope that his father will see him, understand that he was wrong, and return to them.

Masha has never seen her father. Once she discovers that her parents met at a concert of the popular pop group, she scours the internet and finds a man who she thinks might be her father. Seeing his post about buying tickets for the anniversary concert of the same group, she embarks on an adventure, crossing the entire country and attending the concert to ask her father, why he abandoned them.