Around the world, black hand prints are appearing on doorways, scorched there by winged strangers who have crept through a slit in the sky.
In a dark and dusty shop, a devil’s supply of human teeth grows dangerously low.
And in the tangled lanes of Prague, a young art student is about to be caught up in a brutal otherworldly war.
Meet Karou. She fills her sketchbooks with monsters that may or may not be real, she’s prone to disappearing on mysterious “errands”, she speaks many languages – not all of them human – and her bright blue hair actually grows out of her head that color. Who is she? That is the question that haunts her, and she’s about to find out.