Alexis Walker lost her mother and brother in a home invasion. Now Alexis has become a vigilante and walks the streets in search of vengeance. All the while a serial killer known as The South Bay Slasher adds more victims to his list.

After a young woman is brutally attacked, a detective and a cryptozoologist investigate a string of grisly killings tied to the legendary Mothman creature. But another monster lurks in the shadows - Bigfoot, leading to a clash of cryptids.