While a couple creates an audition tape for an up-and-coming Charles Manson film, the dark events of the audition material slowly slip into their reality as they find themselves intertwined in an occult leader's sinister plot.

Thirteen years after witnessing her father’s death by a shark in the Devil’s Triangle, exploration influencer Addy Frost returns to the fateful site wearing a replica of his vintage diving suit, only to face a deadly battle against a great white shark, a mysterious killer, and her own fears.