X concerns two groups of people concerned with the fate of Earth. These two groups are the Ten no Ryu (Dragons of Heaven a.k.a The Seven Seals) and the Chi no Ryu (Dragons of Earth a.k.a The Seven Angels). The Dragons of Earth want to destroy the present world and create a new one. The Dragons
of Heaven oppose them and wish to preserve the present world.
The focus of this conflict is a 16-year old boy named Kamui Shirou. Both sides want Kamui to join them, as his powers will turn the tide of the battle between the Dragons of Heaven and the Dragons of Earth.