From the back of the book:
The real world (copied world) is false (a game), games are reality (real).
The battlefield of the night wizards moves to the electronic world
"Virtual Gate" is a supplement introducing the cyber world defined by IT arts and computers. It contains an online recorded replay with the cyber world as the stage, additional dara protecting PCs in the world of electronics, as well as rules for "avatars" the appearances in the cyber world and clans showing solidarity between wizards.
A world of technology and the soul
It also introduces the other world that exists just like the cyber world overimposed over the real world, in other words the psychic world created by human souls. Just as in the cyber world, wizards, beginning with dream hunters, get to fight in it wearing appearances called "dreamers". Try putting alien worlds together yourself using the new data, avatars and dreamers.