Thom has never known a world beyond the Gray, the endless fog that shrouds his tiny nation of Istland and obscures the world beyond. But the age of airships is about to shatter that isolation and change everything. Thom, along with his inventor uncle, is unwillingly thrust onto The Undaunted on a mission to circumnavigate their fog-bound world. But their journey is complicated by the beautiful Kara, a saboteur whose attempt to cripple their voyage has backfired, leaving her stranded with them. 

Now, trapped together above the ominous Gray, Thom, his uncle, and Kara must forge an uneasy alliance against the unknown. The secrets of the world beyond Istland hang in the balance. Will they survive the journey and make it back home? Or will the Gray claim them all, leaving their planet’s mysteries forever lost?