In this film Nauman bounces two balls in the center of a square marked by tape on the studio floor. He throws them as hard as he can, trying to maintain a specific pattern, but the balls ricochet out of control as his moves become correspondingly jumpy and unpredictable. The film was shot with a stationary camera in the studio that Nauman sublet from William T. Wiley in Mill Valley, California. The sound and image are out of sync because he "didn't have the equipment and patience" to coordinate them.