When exposure to a combination of radiation and insecticide causes Scott Carey to begin to shrink medical science is powerless to help him.

When churlish, spoiled rich man Bob Merrick foolishly wrecks his speed boat, the rescue team resuscitates him with equipment that’s therefore unavailable to aid a local hero, Dr. Wayne Phillips, who dies as a result. Phillips had helped many people, and when Merrick learns Phillips’ secret, to give selflessly and in secret, he tries it in a ham-handed way.