Centers on a group of college friends who meet once a year for their "Rosé All Day" pool party. After years the cracks in their relationships become all-consuming sinkholes filled with vomit, tears and confessions.

Rachel, a concerned researcher, and her team have set out to sea to prove that the disappearance of a family and crew from a merchant ship was for reasons having to do with the supernatural. Her theory that those on the Mary Celeste vanished into a "rift" between dimensions proves true as the boat breaks down and her crew begins to vanish one by one.