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.
Tomáš Holý
Petr Mráz
Bohumil Vávra
Grandpa
Věra Tichánková
Grandma
Jiří Hrzán
Dad
Hana Maciuchová
Mom
Oldřich Navrátil
Plavec
Naďa Konvalinková
Plavcová
Vladimír Kratina
Drtikol
