Bassie & Adriaan: The missing crown

The Baron, B2 and Quick Japie have been in prison since the previous adventure. Now that they have escaped, they want to take revenge on Bassie and Adriaan. They steal a precious crown from a museum after escaping from prison. They are hiding in a secret room of an abandoned castle. The crooks want a large amount of ransom for the crown, otherwise they will have it melted down, and they also lure Bassie and Adriaan into a trap. However, the duo escapes. But then it turns out that the baron accuses them of stealing the ransom. So they have to find the crooks to prove their innocence. They find the hiding place with the help of a computer program created by Robin. The criminals try to flee abroad, but along the way they drive their car into a trap that Bassie and Adriaan have set up. They are driven to the police, where they are immediately put behind bars.