After the mighty Proco and Tiat saved the planet Darius from the evil invading Belser Army, the inhabitants have moved to the planet of Olga for protection, while Darius is being repaired. While there they receive distress signals from Planet Earth describing the same alien ships that attacked darius and so Proco Jr. and Tiat Young are once again sent to fight the alien hordes in the amazingly cool Sagaia!

Huge fans of this epic Sega Genesis title might also want to get into other excellently fun games from this flying genre, such as Prehistoric Isle in 1930, R-Type and the fantastic After Burner II!