The film begins in 1962 aboard the luxury ocean liner Antonia Graza, where a massacre occurs during a lavish party. The story jumps to the present day, where a salvage crew led by Captain Sean Murphy and Maureen Epps discovers the abandoned ship drifting in the Bering Sea.

As they investigate the seemingly deserted vessel, they encounter ghostly apparitions, strange occurrences, and the horrifying truth about what happened aboard the ship. They slowly unravel the mystery behind the mass murder and realize they’re being lured into a deadly trap by supernatural forces—especially a malevolent spirit known as Ferriman.