A group of children are spending the holidays near the Vltava river on the outskirts of Prague. The father of one of the boys asks two of his son's friends to water his garden while he is away on holiday. In return he promises to lend them his yacht. The boys fulfil their task conscientiously but on his return the owner of the garden only rewards them with a small amount of money and denies ever having made his promise. The disappointed boys buy some white paint and write the word "Liar" on his yacht. The furious man complains to the boys' parents who give them a good hiding. They have to get rid of the paint with white spirit. This unjustified punishment brings the boys to the idea that they might as well borrow the boat anyway. They are enjoying their sail until a motor boat overturns the yacht. The boat owner saves the boys from drowning. The crowd which has gathered to watch condemns the way young people behave; the one who protests the most is the very man who had lied to them. The boys derive a certain amount of satisfaction when they notice in the distance the yacht owner vainly trying to wash off the shameful word without much success.
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FAMU (CSSR)