A pioneering voyage deep into the oceans of Europa goes horribly awry and the crew must grapple with the unknown horrors of the deep. The mysteries lurking may hold the key to our very existence.

When the pioneering voyage into the depths of Europa's hidden ocean goes horribly awry, the crew discovers this moon's lurking mysteries may hold the key to our very existence as they grapple with the unknown horrors of the deep and fight to get home at any cost.—S.S.