Japan, present day: Alien Invaders are everywhere, taking over peoples' bodies. Fighting them is Isuzu Ayane, an introverted young girl with the ability to control powerful dimensional Gates. Under the guidance of Kageyama Reiji, a mysterious businessman, she battles Invaders and recruits new Gate Keepers. Will she and her new comrades be able to save the earth?
Beneath Tokyo lies a city whose inhabitants have inherited a natural ability to control the elements. After a civil uprising, two girls surface from the sub-terra in a bid to escape from this secret world. Together, Chelsea and Ruri stumble upon Asagi Rumina, a man who becomes determined to protect them from those who would pursue the maiden of life. After a close encounter with death, Rumina learns that he must develop a skill of his own to keep his newfound friends safe, especially as it seems to be his responsibility to stop the impending doom rising to take over the planet’s surface. Will his power of wind be enough to take on The Company, or will he be forced to kneel before those brandishing electricity, ice and shadow?
Kamui has returned to Tokyo with a traumatizing past, but he is not the only one. Many people are returning to Tokyo for the same reason: they play a part in the End of the World. The Dragons of Earth and the Dragons of Heaven now must fight for the destruction or safety of the world. But is this troubled Kamui really the key to saving the world?