Deep underwater, a cavern hides the gold that sings, the next key to the ancient Qinnowr.

In the heart of the sea, trade winds blow through the Trysanthem Isles. Their legendaries are the breathless and can swim without air.

Few breathless can dive deep enough to find the lost cave, where a wall covered in gold sings with the touch of water. But Shawn Carcerian is one of those few and always up for a bargain and a good adventure.

With Shawn's help, Selah and William must dive deep into the sea and find what secrets have hidden there for centuries. But the greatest threat waits for them out of the water.

And when pirates attack, suspicions abound. There has long been a traitor in the midst of the Eleven warriors. His secrets will finally come to light.

They must all beware of the sharks, both in the water and on the Isles.

Will Selah and William survive the sea? And most of all the dangers that lurk in their midst?