In the heart of the mystical city of Istanbul, where the Bosphorus River meets the Golden Horn, two strangers' lives are about to intertwine in a journey that will take them to the farthest reaches of the world.

Meet Luna Nightshade, a free-spirited travel writer with a penchant for getting lost in the most unexpected places. She's been chasing the next big story, but her latest assignment has led her to a dead end – or so she thinks. When Luna stumbles upon an ancient map etched on a crumbling parchment, she's drawn to the mysterious markings that seem to point to a hidden...