No submarine crew that’s sailed to the ceiling has ever survived.
Will the Frontier be the first?
Ava Cade is learning how to spearfish, pilot a submarine, and fight. But soon, her mentor and best friend’s father will board the Frontier, a research boat on a mission to the ceiling.
To make matters worse, while working one night, she witnesses one of the local vendors kill two men and send their bodies into the blue. She flees, but not before he spots her. Now in hiding, Ava must avoid the shark hunting her, as well as say farewell to a dear friend.
Can the Frontier do what no other ship has done before and return from the ceiling? What will they discover?