Göran buys a house in a suburb. It is in need of some repairs, but Göran believes himself capable of repairing it himself with the help of some cheap craftsmen. However, the house is much worse than he thought. At the same time, a gang of crooks is searching for the dynamite they hid in the basement some time ago. Göran has to rescue both his wallet from greedy craftsmen as well as his marriage with Tina.

As always, Sickan has come up with a new plan. This time he wants to rob the IKEA furniture store. During their nightly break-in Sickan discovers that the store is used as a secret smuggling central for sending American computers to the Soviet Union. The computers are picked up by Soviet submarines sneaking into the Swedish archipelago. Naturally, it is their arch enemy Wall-Enberg who is behind all of this.