Set in the 24th century, Star Gladiator is a 3D fighter built around a plasma-powered weapon system. The backstory: brilliant researcher Dr. Edward Bilstein discovered that humans possess a latent sixth sense capable of channeling plasma energy into a superweapon — but was exiled when it emerged he had used real people as test subjects. Four years after his exile, a rebel faction called the Fourth Empire attacks an army base, and Bilstein appears to be heading for Earth seeking revenge. The Federation assembles a team of plasma force users to mount a final defense — among them the unconventional Saturn, whose weapon of choice is a pair of yo-yos.