High school student Katya Shevchenko (Tatyana Aksyuta) moves to a new district and meets with classmate Roman Lavochkin (Nikita Mikhaylovsky) at school, gradually their friendship grows into love, which seems surprisingly strong for the adults who surround them. Roman's father, Konstantin (Albert Filozov), was in love with Katya's mother Lyudmila (Irina Miroshnichenko) who ended up rejecting him. The mother of Roman, Vera (Lidiya Fedoseyeva-Shukshina), is jealous of her husband towards Katya's mother, hates her and her daughter at the same time. She aspires to separate the children by force , she transfers Roman to another school, forbids them to meet, but love between Katya and Roman does not diminish.