A boating accident off the coast of Spain sends Paul and his girlfriend Barbara to the decrepit fishing village of Imboca. As night falls, people start to disappear and things not quite human start to appear. Paul is pursued by the entire town. Running for his life, he uncovers Imboca's secret..they worship Dagon, a monstrous god of the sea...and Dagon's unholy offspring are on the loose...
Once again tampering with mother nature to disastrous results, Dr. Herbert West continues his research while serving time in a maximum security prison for his previous exploits. West's limited prison-cell experiments are suddenly interrupted by the arrival of a new prison doctor and the brother of the girl who suffered from West's experiments 13 years earlier.
An artist sells his soul to the mysterious M in order to get revenge on the people who killed his girlfriend. Soon, he realises everything has a price, and he is transformed into a horned demon with a passion for killing.
A terror is stalking the land: people are disappearing daily, their bodies appearing covered in savage gashes coupled with precise surgical cuts. The legend of the 'Werewolf of Allariz' spreads across the land like wildfire. When Barbara (Elsa Pataky) falls in love with travelling vendor Manuel Romasanta, she is at first besotted with him - but soon begins to be suspicious of him. What has happened to her sister, who - after being escorted by Romasanta to the city - seems to have disappeared forever.
Studying under a disciple of Aleister Crowley, the leader of an upper class group invokes a supernatural force that slowly devours the village of Marienbad and its inhabitants, threatening to spread beyond its geographical limits. The mayor from the town nearby commissions the building of a dam which would flood the valley and therefore submerge the village forever sealing the evil force under water after leader and his followers were incapacitated to be kept from escaping. However, fate ensured the leader's freedom as he remained in the depths when the waters covered Marienbad. Now 40 years later an array of disappearances and deaths in mysterious circumstances are threatening the town next to the reservoir that now covers Marienbad.
Dante travels across a desolate, futuristic Spain in search of his girlfriend, Ula. He is pursued by a bloodthirsty, cybernetic Rottweiler.
