A group of young people take an alley and its ramp and hill by storm to present an acrobatic charivari act. Trial riders mesmerize the audience with their technical twists, acrobatic turns and one-wheel spins. One of the riders pushes audacity to the point of executing figures over and around the head of an artist who lies on the ground. Skateboarders and inline skaters tear up and down the ramps while a rope-skipping specialist turns a simple children's game into a bona fide acrobatic discipline.

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