On his fortieth birthday, a man engineers a revolt against himself. He telephones his lovers -- all four of them -- and arranges to meet them at his dance school that afternoon. The women are shocked to discover that they have been sharing the affections of the same man. He arrives and tries to explain his actions. He has realized that time is limited for each of us. Total honesty is the only answer. One by one we review the beginning of each affair. The man and his lovers discuss passion, possession, time. How love blossoms from even the smallest seed. He gives each woman a parting gift -- a stopwatch -- and asks them to measure each minute of true love that they experience from now on. The women leave. The man is alone. Later, the fourth woman calls him and they arrange to meet at her house, where he finds the tables turned: he is now one of four lovers. Unable to handle the new situation, the men argue and depart. The man is left alone again...