All over the world, black handprints appear on doors, burned there by winged wanderers who made their way into this world through a hole between worlds. In a dark, dusty shop, the devil's supply of human teeth is slowly melting away. And somewhere among the intricate streets of Prague, a young artist is about to find herself drawn into a brutal war in another world. Meet us! Karu. She fills her sketchbooks with images of monsters that may or may not exist only in her imagination. She's known for disappearing on strange "errands," speaks a variety of languages—not all of them familiar to humans—and the bright blue locks on her head actually grow that way from the roots. Who is she? This question has been tormenting her for a long time, and soon she will have to find out the answer to it. When one of the wanderers - the handsome Akiva - fixes his fiery eyes on her in an alley in Marrakesh, the result is a bloodbath, secrets are revealed, and a love is discovered, the roots of which go back to a distant, dark past. But will Kara regret learning the truth about herself?