When a S.T.A.R. Labs submarine crashes far below the surface of the ocean, one of its scientists is exposed to experimental radiation. He is washed to shore, with memories of the life he had, and the woman he loved and lost. Alone on a desert island, he fights to survive, eating the local, tropical vegetation. When a leopard finds and attacks him, he unexpectedly emits a blast of radiation that vaporizes the big cat's body. Eventually, he learns to use this power to his benefit, killing animals for food, and blasting away holes in the rock faces for shelter. The radiation soon takes its toll on him, as he remembers how he had caught his wife flirting with someone at a dance club and murdered her in a jealous rage. In anger, he destroys most of the island. His face, meanwhile, practically melts away, revealing his radioactive skull.