87 year old Bob Bridges lives a quiet life in a seaside town. His biological purpose - to reproduce and rear children - was fulfilled long ago and he has now reached the day that will come eventually to all of us. The day when his body finally shuts down after a lifetime of renewing itself against everyday wear and tear. We see what the years have done to Bobs body. His cells have started to die off and are no longer efficiently replaced. And when cells die organs degenerate. Bob can no longer move as fast because his lungs heart and muscles no longer function efficiently. He can no longer see as well as he could as film upon film of protein has covered the lenses in his eyes. He cant regulate his body temperature because the blood vessels in his skin are furred up like old pipes and can no longer constrict in low temperatures.