GATE: Thus the G.I. Joe fought there

In 1997, a Gate appeared in Tokyo Ginza. From it, came the armies of Saderan Empire with the intention of conquest of Japan. But little did the invaders knowned, is that they've bite off more, than they can chew: the newly formed Allied Nations Force strikes back at the invaders and pushes the war into the world beyond the Gate. Meanwhile, the Gods are playing their own games, which will effect both of these worlds. It's magic vs technology, modern army vs mystical creatures and middle-age armies, cultures of the 20th century vs the culture of the middle-age society. The G.I. Joe are facing their first great challenge outside their own world.