A thief named Icy Harris tries to steal a rare isotope called Galaxy 4, but it explodes in his face. When security guards try to apprehend him, he finds out the isotope has given him the power to absorb the strength of anyone nearby. Superman averts these disasters and indeed confronts Harris again, and realizes the only way to defeat Harris is to give him exactly what he wants. Superman lets Harris absorb all of his powers, but because his body contains all of Superman's power without also having Superman's invulnerability, Harris explodes.