Bassie and Adriaan find themselves abandoned by their own circus because they overslept, and with no tour-schedule in sight or any money they're forced to take other jobs -- losing each one. A malicious 'poltergeist' turns out responsible for their misery.

Bassie and Adriaan take a well-earned holiday but find themselves chased by two diamond thieves, referred to as B1 and B2. The crooks mistake Bassie for the go-between who came to collect the key to the vault of the stolen diamonds.

Bassie and Adriaan have a diamond named after them. Escaped from prison, diamond thieves B1 and B2 attempt to steal it, dressing as Bassie and Adriaan. The actual Bassie and Adriaan are given three days to prove their innocence.

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.

Bassie finds a treasure map in a painting he bought at a flea market. Three crooks are also after the treasure and try to take the map from our friends.

The Baron and his cronies steal a precious crown and hide in a secret room of an abandoned castle. With the help of their tiny robot Robin, Bassie and Adriaan set out to find the crown and return it to the museum.

Bassie finds a mysterious stone while on holiday in Greece. Three crooks are very interested in the secret the stone holds.

An unknown man asks Bassie and Adriaan to track down packages throughout Europe. To find the packages they have to solve all kinds of strange riddles. On their quest for the packages they travel through the whole of Europe and discover beautiful and interesting places. What they don't know is that De Baron, Handige Harry and B100 are trying to lure them into an ambush. Thus begins an exciting but beautiful adventure!

The three crooks lure Bassie and Adriaan to Curacao to take care of them once and for all. This doesn't go as planned. Back in The Netherlands Bassie wins a trip to the USA in a TV quiz and takes Adriaan on a tour of the whole country. What they don't know is that de Baron, B100 and Handige Harry are on their trail.

An unknown man asks Bassie & Adriaan if they want to track down packages in the Netherlands and France. To find the packages, they first have to solve strange riddles. On their quest to find the packages, they travel throughout the Netherlands and France and discover beautiful and interesting places. But they don't notice that the Baron, Handy Harry, and B100 are trying to lure them into an ambush. And so begins an exciting adventure!

Bassie & Adriaan fly in a seaplane, sail in a canoe, and ride in a covered wagon through beautiful Irish countryside to track down a package. On their quest, they not only discover that Ireland is very beautiful, but Bassie also meets some mysterious little men. The adventure becomes even more exciting when they receive a letter telling them to go to Italy. Because that's where the Baron and Handy Harry are also preparing for an ambush!

Bassie & Adriaan travel all over the most beautiful parts of Great Britain, looking for a package. B100 is looking for Bassie & Adriaan, but has no luck. Just as he finds them, they travel on to Portugal. There they follow the path that a grape must take to become port wine. Via the capital Lisbon, they arrive in the wine region. From there, they take a special boat to Porto and discover some remarkable things. But they don't realize that the Baron is preparing a trap...

Bassie & Adriaan go in search of a package in Germany, which Bassie likes because he fancies a trip along the Rhine. But Bassie doesn't realize that Handy Harry has built a transmitter into his Walkman and that the crooks can now follow him on a special screen. The crooks also see that Bassie & Adriaan are traveling to Greece. There, they have to track down a package with the help of a sailboat. This allows them to see a lot of Greece, but they don't know that there is a diver under their boat, which could be very dangerous!

Bassie & Adriaan are in Denmark. There they will receive the package from the hands of a children's friend, but who is that? When Bassie sees a Viking ship during his search through Denmark, he thinks he is dreaming. But when he suddenly sees B100, he knows he is wide awake. After Denmark, Bassie & Adriaan go to Belgium. On their way there, they are having a great time. They are traveling in a hot air balloon. From the balloon, they look out over beautiful Belgian towns and villages. But they don't see that B100 is preparing an ambush under the balloon...

When Bassie & Adriaan are in Madrid, they hear that the package must be somewhere near Valencia. They travel there immediately. But the Baron is there first and is preparing a nasty plan. And what kind of plan is that? Bassie and Adriaan find out when they arrive in Luxembourg after many wanderings. There, they not only meet the Baron, B100, and Handy Harry, but they also find out who the mysterious client is.