Strange events in the open sea haunt two young lovers in this supernatural fantasy. When the couple finds rare gold, they unlock a dark adventure filled with zombie pirates out for vengeance.

An erotic horror movie dedicated to Joe D Amato, Hyde's Secret Nightmare combines the two genres and mixes them in equal parts. Cross-cut erotic and horror scenes are kept together by a thread of dramatic force bordering on obsession, paranoia, phobia, perversion, and lack of self-acceptance. Everything unfolds in an extreme world where sex seems the only way to attain a state of well-being.

The life of Orlando, a gentle piano tuner, tormented by back pain, changes when he meets Olga, a charming physiotherapist, who diagnoses him with an emotional contracture and asks him to bring her a photo of himself as a young man, so that she can help him resolve his problems. The unusual request will push Orlando to travel and to relive, almost like a spectator, the events of his life that made him the solitary and contracted man he has become.