A night of lackluster anniversary sex leaves longtime partners, Brynne and Ezra, with the unsettling sense that their relationship has lost its spark. Desperate for a quick fix, they decide to try a “happy ending” massage parlor––but unbeknownst to them, they chose the wrong night to visit Angel Spa. An unhinged client has become obsessed with a masseuse, stalking her––and tonight he’s reached his boiling point. His twisted desires turn violent, setting off a chain of events that thrust everyone in Angel Spa into a fight for survival. Trapped in this lurid environment with damaged and dangerous people around every corner, Brynne and Ezra will have to face something even more terrifying than a murderous stalker: their intimacy issues. If they can’t mend what’s broken between them, they’ll lose far more than their love for each other . . . they’ll lose their lives.