When the queen of an evil space empire kidnaps Captain Proton's faithful secretary Constance Goodheart, it's only the first step in her diabolical plan to conquer the Incorporated Planets. It soon becomes clear that there is more to her plot than meets the eye when, on the very edge of death, Captain Proton is saved by a power Not Of This Universe. Caught in an eons-old fight between two alien races, who can Captain Proton trust? No one -- not even his sidekick, ace reporter Buster Kincaid.