Cliff De Young is Michael, the heir to a cursed castle, who marries pretty Susan (Maryam d'Abo) and moves her in. Unfortunately for the newlyweds, an oversexed succubus named Diana (Shari Shattuck) is out to break up the couple.

Leandro, an unemployed mason and his friend, Tocho, attempt to rob a tobacconist in the Vallecas district of Madrid, but Mrs. Justa, the tobacconist, impedes it alerting the neighbors who notify police. Inside the shop, the confrontation between the two friends and their 'hostages', the tobacconist and her niece Angeles, is relaxing, and a budding sympathy arises between them.

People are dying mysteriously and gruesomely, and nobody has a clue what the cause is. Only health worker Mike Brady has a possible solution, but his theory of killer slugs is laughed at by the authorities. Only when the body count begins to rise and a slug expert from England begins snooping around does it begin to look like Mike had the right idea after all.

Roger is the owner of a very successful and exclusive health club. His gym attracts good looking women and men who want to pump iron, aerobicise and mostly socialize. Roger and his beautiful aerobics instructor, Annie, work out together in and out of the club. Annie pushes Roger to complete in the National Aerobithon. But for Roger to even come close to winning he must overcome his fear of defeat - in front of Annie and the world.

A former pilot rebels against his creator, teaming up with the scientist responsible for android technology, her pet robot Spot, a rough-and-tumble riverboat guide, and a martial arts warrior.

Vanessa, a television reporter covering a story of a farmer attacked by his chickens, discovers that this is not an isolated incident. Travelling to Spain with her cameraman Peter, the two discover the survivors of a town wiped out by the birds thirty years ago. Meanwhile, attacks continue as a child's birthday party ends in tragedy and doves devour a poultry farmer and his wife. Vanessa soon comes to the conclusion that the birds are organizing themselves against the ecological ravages of man, but time is running out as thousands of birds launch an attack against a train Vanessa is traveling on.

4,000 tons of oil have been stolen from a Galician deposit. The alleged thieves are defended by the lawyer Ramos, but the witnesses die and suspicions point to Franco's brother.

Sture Lundblad was a Swedish volunteer fighter in the Spanish civil war. Sture is now dead. His son Michael has inherited a house in Spain and decides to follow the trail of his father.

A serpent, created by radioactivity, threatens a Spanish coastal town.