Langåsen boarding school has its 50th year anniversary, and the students are to make a celebration show in the auditorium. Trouble is brewing when a school inspector is to visit the school at the same time.

Set in the township of Sirilund in northern Norway, "Benoni and Rosa" follows the journey of Benoni, a young postman and fisherman, as he grows richer and rises through the ranks to the merchant class, and strives to propose to the beautiful priest's daughter, Rosa.

Stompa has turned seventeen and has acquired interests other than innocent mischief. He falls in love with the mysterious Nel Shaiba from a traveling circus that has settled in town.

Stein Oscar Magel Paus-Andersen (ST.O.M.P.A.) starts at Langåsen boarding school in Stakavik, where he meets his new friends Bodø, Bergen, Nøtterø and Sørlandet. They find themselves tangled up in troubles with a spider, a fire drill and a swimming contest leading to detention.