Fernando Fernan Gomez wrote the original screenplay inspired by the great authors of the picaresque novel of the sixteenth and seventeenth centuries : Miguel de Cervantes , Francisco de Quevedo , Vicente Espinel, Salas Barbadillo , Alain René Le Sage and the anonymous author of " Estebanillo González " . Chronicles the adventures of life of Lucas Trapaza , a rogue who , after wandering for years throughout Spain , becomes a master of that lifestyle .