Next door to the house the Antareans are renting is a retirement home. Three of its residents, Ben, Arthur, and Joe, often trespass to swim in the pool next door. They absorb some of the life force, making them feel younger and stronger. Eventually caught in the act, they are given permission to use the pool by the Antarean leader, Walter, on the condition that they do not touch the cocoons or tell anybody else about it. Rejuvenated with youthful energy, the three men begin to let the advantages of the pool take hold as they are relieved of their ailments.