A story about the love of two young people who were not divided by borders or the cruelty of time.

Fourteen-year-old Pavel, alias Pako, falls into an underground tunnel during an expedition near Lukov Castle, injures his spine, and is confined to a wheelchair. After several months of rehabilitation, he and his mother Věra find it difficult to accept that he will never walk again. Local castle warden Jaromír also has his own problems to deal with in Lukov, as he struggles with grief over the death of his beloved wife. Lukov mayor Karel Zlejšek and his wife Naďa refuse to admit that their relationship is not developing as they had imagined and that this is affecting their son Petr's behavior. Adam and Eva's marriage is also going through a crisis, but so far they have managed to hide it from their children Aničkou and Tadeáš, or Nyny and Dydyn. Tokár arrives in the village with his daughters Dragica and Štěpánka – Šmudla – and tries to fit into everyday life in Lukov.

In one royal forest, where coal miner Patočka lives and works, the friendly dragon Mrak settles down. The king's lackeys come across him while hunting and, terrified, go to sell the news to the king. He is currently organizing his daughter Viola's birthday party. The hunters describe the dragon in terrifying colors, and so the king concludes that the dragon will, according to tradition, want the king's daughter. So he announces a reward for killing the dragon, but no one wants to fight him. The only one who applies is the princess's favorite, the lutenist Marian, but the king does not like him, so he throws him out. Her brother Jan wants to save the princess, but the king doesn't want to allow it...

Did you know that Mesopotamia is the birthplace of beer? Why do people sing and drink? Why do Czechs easily wash away their sins? But beware! The history of beer is as winding as a snake...