Based on the popular book by Krystyna Siesicka, "Zapałka na zakręcie", the story of two teenagers who were connected by an unexpected feeling. Marcin, who has a history of drug addiction behind him, is afraid to tell Kasia about it. She feels that the boy is hiding something, but does not want to ask anything. Mutual misconceptions make it more and more difficult for these young people to communicate. They misinterpret the facts, and as a result their relationship begins to fall apart. Will they be able to save their feelings in time? Will Marcin overcome his own inhibitions and distrust of his beloved girl?