Filmed during Ana Mariscal's tour of various locations in the north of the peninsula to present her first feature film, "Segundo López, aventurero urbano", shows a day in the life of the city of Santiago de Compostela, with special attention to a liturgy celebrated in its cathedral and following its very young and wild altar boy, although also showing part of the daily practice of a disenchanted Pharmacy student and configuring the physiognomy of a city marked by rain, the University and the power of the Catholic Church.