Albert plot
Albert and Egon are real loose balls. Rather than go to school, they play 'pirate' or rob pears. Their fantasy always takes over, especially when they sail down the river in their pirate hats in a washtub. Not everyone can laugh at that, especially Egon's mother. The old grocer, who is fond of them, tells them about the past, when an enormous diamond was exhibited in the museum. Thanks to their pirate knowledge, Albert and Egon one day mysteriously end up in a fantasy world full of weird characters and sorcery. There they also discover the missing diamond. Thanks to all sorts of breakneck feats they get hold of the jewel, but... a way to get back home is not easily found.