Waldemar, the renowned adventurer, joins an expedition to find the Yeti in the Himalayas. While hiking the mountains, he's captured by two cannibalistic demon nymphets guarding a remote Buddhist temple and becomes their sex-slave. They transform him into a werewolf setting him loose to roam the mountain where he encounters a sadistic bandit.
| Directing | Miguel Iglesias | Director |
| Editing | Carmen Fábregas | Editor |
| Writing | Paul Naschy | Writer |
| Art | Alfonso de Lucas | Set Decoration |
| Camera | Tomàs Pladevall | Director of Photography |
| Costume & Make-Up | Manolita G. Fraile | Makeup Artist |
| Costume & Make-Up | Hipólita López | Hairstylist |
| Costume & Make-Up | Joaquín Navarro | Assistant Makeup Artist |
| Costume & Make-Up | Adolfo Ponte | Makeup Artist |
| Production | Modesto Pérez Redondo | Production Manager |
| Production | José Antonio Pérez Giner | Producer |
| Directing | José Pascual | Second Assistant Director |
| Directing | Francisco G. Siurana | Assistant Director |
| Art | Alfonso de Lucas | Set Designer |
| Art | Carlos Frigola | Property Master |
| Art | Ramon Ivars | Assistant Set Designer |
| Art | Tunet Vila | Assistant Set Dresser |
| Crew | Alfredo Segoviano | Special Effects |
| Crew | Jacob Rupp | Stunts |
| Camera | Agustín Barril | Second Assistant Camera |
| Lighting | Pedro Bravo | Gaffer |
| Camera | Javier Ferrer | Assistant Camera |
| Camera | Santiago Rodríguez | Camera Operator |
| Camera | José Salvador | Still Photographer |
| Costume & Make-Up | Ana Salmerón | Costumer |
| Editing | José Antonio de la Loma Jr. | Assistant Editor |
| Directing | Paquita Vilanova | Script Supervisor |
| Crew | José Luis Chinchilla | Master at Arms |
| Production | Carlos Frigola | Production Assistant |
| Production | Marcelino Riba-Abizanda | Production Assistant |
