In the vast, lawless ocean beneath the thick surface ice of Jupiter’s moon Europa, independent undersea miners compete against megacorporations for natural resources, and pirates hunt for unwary prey.

Kassia McCullough will stop at nothing to enact revenge on Pretorious Grant, the man she holds responsible for her father’s suicide. When Grant's half-brother escapes from prison, Kassia may just have her chance to capture her elusive and powerful enemy.

Earth Detective Max Danzig has his own reasons for pursuing the nefarious siblings. The newly escaped convict, Somerled Rhone, murdered his partner, and Max is determined to bring him in alive.

Brought together by their mutual quest for vengeance, Kassia, Max, and an outlawed AI named Alex embark on a perilous journey, dodging bounty hunters, corporate mercenaries, and dangerous undersea creatures along the way.