Three young adults in Most sort out feelings and responsibilities: Monika's boyfriend has left for the States, her mother wants her to join him there, and if the invitation does come, what should she do? Toník is a nice guy, his love for Moni is unrequited. He's trying to rebuild his family's crumbling house; a nearby factory has made an offer to buy the land. With Moni, he watches out for the two young sons of Dasha, their friend who's in a hopeless long-term affair with a married man: Dasha is at once unstable, unrealistic, neglectful of her boys, and cruel to those who help. For whom is this something like happiness?
Petronel, an angel, is still working at the Heaven's gates but is confident that he deserves a better function. His everlasting tempter Uriah, a devil, takes up tempting him. All one has to do to know all that God knows is pick an apple from the tree of knowledge. And then, the route to the well-deserved acknowledgment is free. Petronel and Uriah than proceed to argue about the apple, ant the results are catastrophic. The precious fruit falls all the way down to the Earth. The confused angel and his friend, the devil-tempter, have to quickly enter the human world, find the apple of Knowledge and bring it back. The night before Saint Nicolase's day they get tangled up in a peculiar whirl. They meet little Anezka and her beautiful mother, a crew of deceitful carolers, the greedy Kostál and a likable Sausage-seller. Before they manage to find the apple and bring it back where it belongs, they first have to endure a great adventure and get through quite a few dangerous setups.
The picturesque story of the Czech-American family of Count Frantisek Antonín Kostka of Kostka who learns that his aristocratic fore bearers have left him their ancient family seat - the Castle of Kostka.