Die große Fahrt(1969)

This year, the annual bike race will pass the highrise where little Max and Tüte live. It is a very hot day and the two boys try to come up with an idea to refresh the bikers. They finagle a huge water sprayer and all their neighbors get involved. But right at the crucial moment, a cat causes a huge accident and the would-be winner in the yellow jersey gets the worst of it.