Eighteen year-old Marin has few clues about where she came from, outside of a recurring nightmare of a horrific boating accident. Determined to prove to the world and to herself that she can overcome her water phobia and lead a normal life, she enrolls in a summer internship at a marine research facility in California. When a cataclysmic accident suddenly brings her drowning nightmares into reality, she learns a secret about herself that begins to unlock the mystery lurking in her hidden memories. What she discovers could be the key to her past, but opening that door forces her to choose between two worlds and two hearts, and starts a chain of events that could destroy everything and everyone she loves.