Martín (Zoe Berriatúa) is a teenager living in the San Blas district of Madrid. He is upset with his father Arturo (Imanol Arias) because he blames him for his mother's death. With the help of his girlfriend África (Elena Anaya), who will become his stepsister, he tries to get revenge on him.
After the civil war, Rosa, a beautiful and hard worker woman falls in love with a sharpener who turns out to be a con man. When she becomes a widow, she emigrates to Madrid with her daughter beginning to work as a nurse in the home of Don Pedro, an influential food manager.
In a small Spanish town, during the Christmas holidays, a group of rich old ladies organize a peculiar event that consists of inviting a homeless person to sit down to dinner at their wealthy table. Plácido, a humble worker, is hired by the organizers to participate in a parade with his three-wheeled vehicle, a seemingly simple mission that will not be easy for him to accomplish.
When the pieces of a singular figure are unearthed and then joined together, a devil of the lowest category breaks into a small Mediterranean village. From that moment on, the demon will enter the life of a painter named Bernardino, in the affairs of a "modern" marriage, in the existence of a frightened gardener and, finally, in the day-to-day life of the Great Momo.