During a school trip with his parallel class, Bert plans to make a move on Paulina. At the same time, the bus gets stuck in the middle of the forest. Lill-Erik seizes the opportunity to take a pee, only to be left behind by the bus. The sun is shining and it's summer vacation. Bert wants to go to the beach and check out the girls in bikinis in general, and Paulina in particular. Bert's dad is going through a midlife crisis. Bert is forced to take over his dad's optician shop because his dad Fredrik would rather play with Bart's rock band "Heman Hunters". This turns out to have certain advantages, because a wonderful, fantastic girl comes to the shop. It's time to start middle school. Åke gets off to a strong start by blowing up the chemistry lab, and Bert falls in love with Ida. But Ida is with a guy called "The Gravedigger." For some reason, he wants to skin Bert alive.

Björn struggles with running the company, which is slowly going bankrupt. His habit of putting off, forgetting or canceling meetings and phone calls doesn't make it any easier. The company faces an immediate threat from the Swedish Tax Agency, and he also has a new intern who follows him everywhere and watches expressionlessly as he handles all challenges.