When a group of ordinary teenagers is mysteriously summoned to a fantastical realm, nothing will ever be the same again. Grey, a quiet and intelligent high school student, finds himself thrust into a world where legends and ancient prophecies rule. Along with his newfound companions—Aria, the gentle and talented magician; Amy, the resilient fighter with a fiery spirit; Anthony, the determined athlete; and Jackson, the once-arrogant otaku whose inner demons threaten to overtake him—they must learn to survive in a land of peril and wonder.