Hjördis comes to visit just as Rolf was thinking of taking Bettan to see a play. When Hjördis reveals the end of the play, Rolf scolds her, but then Bettan moves out. Rolf, with Nisse's help, records a video to convince her to come back.
Rolf finds a love letter in his apartment and he thinks it is from a secret lover to Bettan. Rolf then finds out that "the secret lover" is Conny Raberud.
Rolf finds a bag with a lot of money on the tram and immediately begins to live a debauched life. Soon the apartment is flooded with craftsmen, mothers-in-law, bank forgers and police officers.
Rolf meets an old classmate, Berndt, who boasts that he has become very successful. Rolf doesn't want to appear inferior, so he exaggerates and brags that he is the manager of the tramway.
Rolf fishes for votes to become Masthugger of the Year. The fight between Rolf and Lasse Wilczewski will be fierce. A broken vacuum cleaner that Rolf gave Bettan as a present affects the outcome of the election.
Rolf's mother-in-law is coming to visit, which causes Rolf to go to the roof. The quarrel also affects Nisse and Ina. At the same time, Nisse is practicing for Jeopardy, in which he will participate.
Rolf thinks he has been fired so he and Nisse write an angry letter to Rolf's boss Arne Westin. But it turns out that Rolf has been promoted to station master.