Gus and Holger are inventors in their free time. One day they realize that they have invented a laugh bomb; a machine that makes all the people around laugh.
| Actor | Role |
|---|---|
 Gus DahlströmGus | Gus |
 Holger HöglundHolger | Holger |
 Karl-Arne HolmstenJohn | John |
| BBibi NyströmLinda | Linda |
 Gunnar OlssonProfessor Planius | Professor Planius |
 Birgitta AnderssonVera | Vera |
 Git GayElegant lady | Elegant lady |
 Olof ThunbergVillain | Villain |
 Ulf JohanssonPolice com. | Police com. |