Plot

A scientist tries to save his son from cancer but his experiments turn him into a shark-man instead. A group of people from a pharmaceutical corporation are sent to the mad doctor's island to investigate his activities.

Experimenting with shark DNA in his remote laboratory to discover the cure for end-stage diseases, the zealous bio-scientist, Dr Preston King, invites a team of doctors, his wife, and her latest boyfriend to the island to witness the progress of his research. But, there, the unsuspecting visitors will come face-to-face with the true nature of King's highly questionable procedures, as a monstrous half-man/half-shark hybrid who knows no fear roams the area, hungry for human flesh. Is there an escape from the powerful jaws of the hideous Hammerhead?—Nick Riganas

In an uncharted island in the Western Pacific, the scientist Dr. Preston King is researching the use of stem cells entwined with shark cells with Dr. Krause and the exiled Dra. Katie Medevenko to heal cancer. Out of the blue, Dr. King invites his former boss and colleagues from a pharmaceutic company where he worked to see his progress. The greedy owner of the company, Whitney Feder, goes with his "bimbo" Julie; the biologist Amelia Lockhart and her boyfriend, the IT manager Tom Reed; and the assistants Amos Bernie and Jane Harper. Dr. King welcomes the guests on the arrival and soon Tom learns that Amelia was the fiancee of Dr. King's son, Paul, who died of cancer. After dinner, Dr. King presents his research, and the group learns that Paul is alive, half-man and half-shark. Further, Dr. King is a mad scientist that is seeking revenge against Feder and his company, and Paul is hunting them down.—Claudio Carvalho, Rio de Janeiro, Brazil