Otto Kimmel had a long career as a confectioner. Now he is a pensioner and primarily a grandpa. In his house, where three generations live under one roof, Otto is the restless soul; this sometimes causes problems, but also brings a lot of joy. For his grandchildren, Grandpa Otto is a "fragrant buddy" because he is up for a lot of fun and initiates the craziest things. To Martha's chagrin, however, he sometimes oversteps his grandfatherly "sphere of competence". Amusing events and entanglements unfold over 75 minutes, and the "Gesellenstück" (journeyman's play) finally results in something that even Grandpa Kimmel is more than surprised by.

On the way to the holiday camp, 16-year-old Steffi falls in love with Norbert, whom she has known for a long time from visiting grandfather in Pinnow. She made a quick decision to change her future plans and decided to become a milker, because Norbert is the newly appointed apprentice trainer for livestock farming in Pinnow. The grandfather, who is very happy about Steffi's visit, cannot prevent his granddaughter from making up her mind. Norbert himself was an apprentice in Pinnow and often suffered from the teaching methods of his predecessor. That's why he wants to do it differently.