Done back-to-back with "Kidnapping", 1982, this family entertainment continues the saga of little Bertram's rather erratic and not always law-abiding family. Parents, chief schemer Uncle Georg, Bertram and his swarm of siblings all get into hot water when Betram's slapdash kindergarten artwork is somehow being mixed up with a famous painting from a museum.

It cannot be said that the two actors Kurt Karlsen and Valdemar Hansen are particularly successful. The audience often has to ask them to stop, and financially things are not going well either, so they have to flee from their hotel bills. In a provincial town, Professor Andersen has just died, and when the two actors arrive in town at the same time, they are mistaken for the professor and his assistant and are given accommodation at one of the town's hotels as guests of honor. Then events take a turn for the worse. A bank director, a lawyer, and a contractor are very eager to see the late professor's invention continued, as the formula was lost when the professor died. Who will win in the end? The suspicious businessmen, the two actors, or two young people who love each other? And how many times will bank assistant Johansen lose his job?

Based on Bjarne Reuter's 1975 juvenile novel, even broader comedy strokes are employed in the film version, but bright spark Bertram is still at the center of things when a nice but dubious uncle (he has a criminal record) takes all the kids of a working class family, hit with bad luck, away on an outing. A plot is cooked up to kidnap some rich kid. It works at first, but soon things get out of control.