Once upon a time, four girls embarked on an adventure they never imagined possible.
Life has been rough for teenager Jishin Tal. She has been passed around between foster homes for the last five years and plagued by vicious rumors. Broken and distraught one day, she flees to the school roof to find sanctuary. It's not what she finds there that changes her life but what finds her.
In a burst of light, Jishin suddenly finds herself in a forest in the middle of nowhere, but she's not alone. Three other students are with her: Misako, the kindhearted tomboy and the only person to give Jishin a real chance at friendship; Ayumi, the quiet girl from Jishin's class people know little about; and Unmei, the wealthy and popular snob who's made Jishin's life a living hell. The girls come across Hikano, a young man fleeing a swarm of schreechlings. They rescue him, only to discover that he's not human, nor are they even on Earth.
Somehow, they have been displaced to Sora, a world full of magic and unusual races, yet one that still bears several uncanny resemblances to Earth. With help from Hikano and his older brother Abera, the girls venture north in hope of finding the kinsho, a renowned priestess with the power to create a portal back to Earth.
But one of the brothers harbors a dangerous secret...