A period musical comedy set in a quiet Prague quarter at the end of the fifties. Using the western plot device of the "man from nowhere" a generation gap story unfolds of changing social climate. The action is driven by the character of a young man named Baby who causes a local rebellion by bringing rock'n'roll to a Communist neighborhood raised on swing.

A comedy on a typical children summer camp from the socialist time, telling the truth about it: combination of strange cynical leaders, absent-minded young assistants with complexes, teenage girls desperately in love with them etc. What a pioneer camp pretended to be and what it really was about. All this produces many embarrassing situations.