In the high-stakes sequel to The Fog Diver, thirteen-year-old Chess and his crew must stop the deadly and mysterious Fog from enveloping the city of Port Oro and destroying their world.

Chess and his crew—Hazel, Swedish, and Bea—may have escaped the slums, but they cannot escape the Fog that threatens to swallow the entire mountaintop city of Port Oro.

Only one thing can stop the fog: an ancient machine known as the Compass. Only one person can find it: Chess. With the help of his crew, Chess faces dangerous encounters, brutal battles, and deadly driftsharks to unearth the hidden instrument. It’s a race against time to save this high-altitude sanctuary.

With adventure at every turn, peril behind every corner, and a few determined slum kids who are up to the task, Joel Ross presents a fantastic world in this fast-paced follow-up to The Fog Diver.