It has been over two decades since Elizabeth lost her family in a tragic event on Loch Ness.

Now, in a half-work-half-vacation, she is making her return with Alexa, her partner from work, Hailey, her seven-year-old daughter, and Brooke and Marcus, her friends from college, to study an influx of sea turtles that found their way into Loch Ness and hopefully find some answers about actually what happened to her family in the process.

Things soon go South once a stewardess goes missing on the loch, and Elizabeth finds herself reliving her childhood nightmare.