The circus season is over and Bassie and Adriaan are on vacation. When they visit the flea market, they accidentally come across a treasure map. The clues on the map lead to the Canary Islands, and Bassie and Adriaan decide to get on the plane and look for the treasure. Unfortunately, they don't notice that the Baron, B2 and Swift Jiminy have followed them. The bad guys plan to steal the treasure map so they can find the treasure themselves. Could Bassie and Adriaan put a stop to that?