Professor Archibald Chagrijn exposes the world to his blubbering gas, which makes people sad and causes them to cry. Bassie proves immune to the blubbering gas -- as he has had an overdose of laughing gas. The professor is hiding on the Canary Islands, but Bassie and Adriaan manage to track him down.
as Bassie / Head of Secret Service (Voice)
as Adriaan
as Professor Archibald Chagrijn
as Joris
as De kapitein / Jeroen van der Steen
as Robin the Robot (Voice) / Reporter / Hotel employee
as Inspector Van der Steen
as Inspector Kaletie
as Women in hotel
as Crying man
as Crying woman
