Four sisters come of age in America in the aftermath of the Civil War.
A group of friends run a popular travel vlog that helps fund their adventures. The leader of the group brings along her younger sister for the next scuba diving trip to an isolated cove. But when their plane crashes, the two sisters must use their strength, resourcefulness and immense courage to survive a pack of great white sharks.
After surviving a shark attack, a young woman is plagued by nightmares of being stalked in the dark sea by a ravenous predator, and by hallucinations of visits from her sister and boyfriend, both whom were killed in the attack.
