Baby Bruno tries to escape from his playpen but crashes his father Paul's car in the process. While Paul returns to his boring job nevertheless, Bruno dreams to travel to a planet made completely out of chocolate teacakes.
Paul and Renate have a horrible road trip while travelling to a friend's confirmation. Opa Bommel, who has the house for himself, sets up a poker game with old friends and goes on a ghost hunt.
Investors visit the company Paul is working at. Paul is being delegated to organize the visit but delegates the task even further. While Bruno is going fishing with Honk, the teddy bear disappears so Bruno goes on an investigative hunt.
After finally receiving a Bobby Car by is father, Bruno tries to win the heart of the girl next door. But he has a rival: Neighboring boy Norbert. Meanwhile, Opa Bommel and Paul enlist for a TV show.
Opa Bommel starts working at Paul's company - and is immediately being promoted to supervisor. Meanwhile, Bruno is looking for Honk's mother for his birthday and discovers her at a circus.
After Opa Bommel causes a flooding, Paul's and Renate's honeymoon is being postponed. Opa Bommel re-visits Hamburg's Reeperbahn which sure has changed since his youth. Bruno is searching for the made-up treasure of "Tun-Fant-Amun".
Paul wants to enforce a pay raise - but always loses his courage in front of his boss. His assistant has very unusual training for him to raise his self-confidence. Renate visits a cooking class and Bruno enjoys his wading pool.
Paul's 40th birthday is due. Opa Bommel plans a party against Paul's will which results in chaos. And baby Bruno is looking for the perfect birthday present - with his dad's stolen credit card.
Renate is being invited to a vernissage by her snotty art lecturer where he makes fun of Paul with a very unflattering portrait. Opa Bommel helps a friend to retrieve his car which has been stolen by a corrupt car salesman.
Paul's boss has been seemingly killed. Gossip around the company concerning the murderer, the so-called "Suburban Beast", quickly spreads. Arbitrary assumption soon make Paul the prime suspect.
The Bommel family wants to go on vacation. Paul is against it but soon changes his mind. On a bus trip literally everything goes wrong and baby Bruno gets into the castle of a mad scientist.
While an important meeting with another company is due, Paul has to watch his secretary's plants. Meanwhile, Bruno tries to become the star of a TV commercial.
Opa Bommel wants to remarry - even though he's 90 years old. While investigating, Paul learns that the story is staged to impress his friends. Paul tries to help out the old man using various costumes.
