At the end of the school year Violeta is upset because Markos, her uncle and teacher has to leave on a business trip and she will have to spend all her bvacation/b at the house of her grandmother Margarita in Villa Florida, ... He arrives accompanied by his brother bNeto/b, his aunt Flora and his cousin Narcissus, a very egoistic boy. In the basement of the house ther is an old machine invented by the Margarita's father, and which her husband Geranio worked all his life, ...