Jan Sienkiewicz, a writer and lecturer who was expelled from university, takes a job at a Warsaw high school. Under his care comes the school's famous class of rebellious and knowledge-resistant outcasts. IIB are students from hell, and their future seems doomed. But Sienkiewicz, armed with literature, enthusiasm and a lot of unconventional ideas, will challenge the group doomed to exclusion. Will he be able to tame her and save her? A story about friendship, love, school madness and that everyone deserves another chance.

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…

Paramedics from Leśna Góra are getting ready for Christmas! When Dr. Góra tries to prove to his son that Santa Claus exists - it ends with the intervention of firefighters. When Wiktor, together with Czarek, hangs Christmas decorations in the house, a violent dispute ensues. Lisicki is also extremely unlucky, and is met with unpleasant events. His sister Wanda, on the other hand, plans an intimate evening with Ben, but her plans will be effectively thwarted. On the other hand, a special guest turns up at the Lisickis' house: uncle Leon from America, as eccentric as he is rich!