Professor Don Carlos is a scientist who, after much research, discovers a chemical compound that, in the form of bomb, is capable of making people become peaceful beings. Just before his death, Don Carlos reveals to his friend and collaborator Alfredo the secret of his discovery
Fernando Fernán Gómez , Julia Martínez , José Isbert , Antonio Riquelme , Susana Campos , Félix Fernández , Josefina Serratosa
