Marla. Amirah Adara and Tiffany Tatum are held captive in a locker room, desperate for help. After days of being stuck in this small, dark space, their hope is beginning to run out. But one night, Veronica Leal gets a phone call from her employer, telling her to rescue the girls. She drives to the house where they are being held and as she enters, they call out for help. When Veronica reaches for her keys, an alien parasite starts to creep closer to her...