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
as Alfredo
Julia Martínez
as Paquita
José Isbert
as Mauricio Dupont
Antonio Riquelme
as Loco
Susana Campos
as Celia
Félix Fernández
as Don Carlos
Josefina Serratosa
as Doña Rosario
