When a teleportation spell goes catastrophically wrong, Y/N—a fairy from a magical world where humans are feared and distrusted—finds herself stranded in a place unlike anything she has ever known. A world surrounded by towering walls. A world haunted by man-eating Titans. A world where humanity is fighting for survival. Discovered unconscious outside Wall Rose by Hange Zoë, Y/N is taken into custody by the Survey Corps, where suspicion immediately falls on both sides. The soldiers don’t know what she is, where she came from, or whether she poses a threat. Meanwhile, Y/N sees humans exactly as she was taught to: dangerous, selfish creatures capable of cruelty beyond imagination. As tensions rise and trust proves difficult to earn, Y/N must decide whether the stories she grew up hearing were true. And the Survey Corps must decide whether the mysterious fairy in their custody is friend, foe, or something in between. But while monsters roam outside the walls, Y/N begins to realize that the people within them may not be monsters after all. And perhaps the greatest danger isn’t the Titans. It’s opening her heart.