Marine Biologist Maggie Sunderland had always thought her father’s belief in the aquatic creatures he called Bourne, a group of marine humanoids, was mere fantasy. But after a disastrous naval sonar test injures and strands two of the mysterious creatures, Maggie is quick to rescue them. But her father isn’t the only person seeking the aquatic Bourne. The Navy is closing in on them, wanting to uncover the truth of their technology. But the Bourne have other plans. Centuries of ocean pollution and overfishing have led one of their powerful factions to believe humans should be taken out entirely, and they will stop at nothing to ensure their own survival and the future of the oceans.