A criminal produces an uncontrollable laughter to the population and Mortadelo and Filemón will have to stop him.
Mortadelo / Tía Fulgencia (voice)
Filemón (voice)
Filemón en sueños (voice)
El Súper (voice)
Rompetechos (voice)
El Profesor Bacterio (voice)
Ofelia (voice)
Señorita Irma (voice)