Byakuya and Mitsuki Hayabusa are not your typical high school students. As well as being werewolf siblings that attend a high school for monsters, they are in a monster association known as the Mid-Knights. Byakuya has a traditional way of thinking and is resentful, keeping most at a distance while he tries to figure out the cause of their parent's death. Mitsuki on the other hand is kind of rebellious of her brother's wishes, and more forgiving, almost to the point of being naïve. The Hayabusa duo have always stuck by one another, fought alongside each other, and are partners in the association, but will their different ways of thinking drive the close relationship of the brother and sister apart?

Kaika Osozaki has always been a shy, quiet, and kind of geeky girl. She keeps to herself, away from everyone but her best friend Emiko Nitori. She has never been one to hang around guys, in fact, whenever she is near someone of the opposite sex she gets all flustered. But, when a new "product" is launched by a new company called A.C.T.L, the normal lives of these two friends take an unsuspecting turn.

Other than the people who whispered when she walked by, it seemed as though there wasn't anyone on Earth that knew Scarlett Harvey existed. Including her aunt. She always sat alone, and had no one to talk to; she was a nobody. However, the new kids in school aren't exactly from Earth. What happens when these three pop into her life? Everything she thought she knew about herself and her family is about to change. Can she handle all the truth and secrecy? Can she live up to her destiny? Find out in "Up Above, Down Below."