13 high school girls suddenly develop a craze for Jazz. In order to buy their instruments, the girls try everything, from working part-time jobs at a supermarket, to poaching wild mushrooms in the forest, wreaking havoc wherever they go. They finally get their instruments and make a meager start. Their Mathematics teacher turns out to be a jazz enthusiast and he coaches them through the "community noise pollution" stage into some real swing. Now, they are heading for their first performance in a local music festival...
(source : DVD)