Kaytek, an unusually stubborn twelve-year-old, is brought up by his grandma and dad. One day, the troublemaker discovers that he’s got supernatural powers, which completely take over his life.

Even though Maja has devoted her entire life to acting, she does not believe in herself and her abilities. Therefore, after graduating from acting, she plans to apply for marketing and management. Everything changes when a new director crosses Maja's path.

The rebellious IIIB crew and their unconventional teacher Jan Sienkiewicz are back! Love, troubles and school dramas make up everyday life of Dante, Nel and the whole gang. It is joined now by a young mathematical genius - Korek. The guys intend to teach him how to pick up girls, but it turns out that their know-how is rather theoretical…

One day Grandpa Jeremi causes such a commotion in the retirement home that he is threatened with transfer to a psychiatric hospital. Marta, his daughter, agrees to take him in, although this is difficult for her, since Jeremi is unpredictable and has a vivid imagination. The situation is complicated by Jagoda, Marta’s daughter, who adores her grandfather and shares his crazy ideas. When Jeremi refuses to live with the family, Jagoda decides to take matters into her own hands.