Zoey Thompson’s trip with her best friend Emily turns into a lethal nightmare when Emily and Zoey's own boyfriend, Ryan, set a deadly trap. When Emily demands Zoey’s bunk and suffers a fatal fall during the struggle, Zoey is falsely accused of murdering Emily’s unborn child. Framed and murdered by Emily’s vengeful husband, Ethan, Zoey discovers the lovers' conspiracy only in death. Reborn on the day of the trip, Zoey is no longer the innocent friend. She returns seeking a brutal, systematic payback, ensuring that every betrayer drowns in the chaos of their own making. This time, the bunk is her throne of revenge.