An agoraphobic inherits her father's house in a remote part of the Florida Keys. When weird things start happening, she discovers that there's something far more terrifying trapped inside the house with her.
When Dakota tries to break off her toxic relationship with Axel, it starts transforming him into a monstrous creature. He gradually succumbs to the poison of the decaying relationship, becoming a creature with increased aggression, a touch that melts skin and worst of all, he's contagious.