Five-year old Kája likes to play most anywhere where water is. And just as his mother dresses him into clean clothes, he is already dirty and his mum has to wash all the time. One day, mummy punishes Kája for his mischiefs and the boy thus decides to run away from home - he takes advantage of mother's momentary distraction and there he is, gone. But it soon begins to rain and the boy hides in the booth by the rafting-yard. There, he discovers Mr Tau, drenched with rain, who has the ability to change into a small man and vice versa with a help of a magic bowler hat. Besides that, he can do a lot of other magic. He wants to help Kája, but his bowler shrank in the rain and lost its effect. He sets off with the boy to take him home, but Kája does not know the address and, moreover, all houses in the housing quarters look the same. In the docks, they board the Nautilus steamboat and go for a trip. The captain of the steamboat calls for the police, which pursues them. But Mr Tau swirls his bowler, which has begun working and can do magic again. The steamboat disappears in the waves, transforms into a sailing boat and sails through the city, landing right under the windows of the flat where little Kája lives.
The film was distributed to Czech cinemas as part of the series Mr Tau Goes to School along with the feature film of the same title and the cartoon film Puzzle (directed by Zdeněk Seydl and Ludvík Kadleček). For more information about the series, see the note to the movie Mr Tau and Claudia.
Marta Křesinová, Vilém Kijonka, Pavla Marková
Stanislava Procházková (loutková část)
Jan Petrů, Václav Pošta, Augustin Valko
Martin Baroch, Jan Syrový, Karel Prchal
Pan Tau a samá voda
Mr Tau and Cold!
Pan Tau na vodě
Pan Tau und lauter Wasser
Czechoslovakia, Federal Republic of Germany, Austria
30 April 1971
Exhibition: 22. přehlídka filmů pro děti a mládež Benátky
Benátky / Italy