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Realizing that a threat from the Bacterians may be imminent, the Gradian Government deploys its Gradian forces to combat the threat. Among them is Special Colonel James Burton, who had defeated the Bacterians a few years ago. Armed with an A.I. program called Gaudie, James Burton sets out in the hyperspace fighter known as the Vic Viper, in the hopes that he can combat the new Bacterian threat. But little does James know that there's much more in store for him...