The evil Alien Barabou disguises himself as Leo's younger brother to retrieve the Ultra Key, meaning the Land of Light and Earth will collide.
Leo discovers the true intentions of "Astra" and must put an end to it.
A beast under the guise of a Flying Saucer travels from a distant planet to attack Earth. MAC doesn't detect it, and gets all but destroyed.
Tooru and some friends try to attract a flying saucer. Unwittingly, they draw the attention of Black Dome, which had been summoned to earth by Commander Black.
