Two carnies (Sewell and Gugino) abduct a mermaid in Ireland, circa 1900, and decide to transport her to America. As their ship loses its way and heads towards the mythical Forbidden Islands, the mermaid begins to display its deadly side.

The script centers on a young woman with a long-term phobia of the bogeyman, who voluntarily checks herself into a mental health facility with the hope of conquering her overwhelming fears. However, much to her horror, she discovers that some things are terrifying on purpose, and confronting her demons was not the best course of action.

When a college student witnesses the alleged suicide of her roommate, it sets into motion a series of horrific events that cause her to fear the supernatural entity. As she tries to convince the rest of her dorm that the Boogeyman does exist, the evil force grows stronger and her friends begin to pay the price. Now she must stop this ultimate evil before the entire campus falls prey.