The Mráz family is preparing for holidays. Parents are traveling to the spa and little Petr is going to the country to his grandparents. In addition, to the chaotic preparations, mother's friend is bringing a dog Blek. She wants Petr to look after it. Grandfather welcomes Petr and the dog with pleasure because he needs the ally against strict grandmother. Grandfather is not very skillful and thus grandmother often experiences troubles with his ideas.
Second part of the trilogy. Vasek is expected to go to Bulgaria for a holiday with his parents during the summer vacation, but the boy finds the prospect of spending the summer with his gamekeeper grandfather far more tempting than the seaside. On the last day of school Vasek picks up his final report, but after that he takes his already packed bag and sets off for the Bohemian Forest without telling his parents. The grandfather is happy to have his grandson at his side again. In the evening, he gets a phone call from Vasek's mother. The trip to Bulgaria has been postponed and Vasek can stay with his grandfather for the time being.
Maniac, a driver, sits on the track women, which then rape and kill. For loved ones, he is an ordinary person who has a wife and child. When exposed, he does not stop before killing his wife and takes his son hostage, under the guise of which he is trying to escape abroad.
The gamekeeper Straka lives by himself in the Bohemian forest hill. He has quarreled with his only son. He cannot come to terms with the fact that his son has abandoned his beloved forests and settled in a town. He has never even met his grandson Vasek. Following an illness, however, little Vasek needs some country air, and so one day his mother Jarmila delivers him to her father-in-law's cottage. At first Straka is angry, but Vasek is an unaffected lad and throws himself with verve into all the little adventures that the forest provides.
This comedy is about one average family. The father works as master in the factory and his son is studying on high school. One day father must start to visit the evening school. It's the same school as his son visiting. The lives both students are connecting together. The son must teach the math and physics his own father. The father getting to know, that the life of the students is not simple as he supposed.
