 A couple of English tourists rent a boat to visit the fictitious island of Almanzora, just off the southern Spanish coast. When they arrive, they find the town deserted of adults, there s only children who don t speak but stare at them with eerie smiles. They soon discover that all the children of the island have been posessed by a mysterious force or madness which they can pass from one to another, and which makes them attack and murder their elders, who can t defend themselves because nobody dares to kill a child...