A comedy mystery involving the composer and cartoonist Hubert Yrhage, the journalist Gary Lundberg, anticartoon campaigner Lena Lett, the mysterious Jens Myskovich and music publisher Darling Karlsson. Yrhage receives his manuscripts from an 11 year-old whose inspiration comes from the mysterious events at a boarding house where several of the characters stay.
The year is 1954. The war in Korea has just ended and the superpowers stand by each side of the boarder. The peace in Europe is fragile and the cold war is imminent. At F8 - Air Fore Base, the yellow squadron stand ready with its J29 fighters.
"In rain and shine" - Sid och Filibert are identical twins. Sid is a theater manager and composer and when his brother arrives to Stockholm for a position at the Museum of Natural History, Filibert is mistaken for Sid.
The Swedish officer Mikael Bourg has served with the French army in Africa. When he returns to Sweden after many years abroad to recover from malaria, he meets his son, a student who prefers partying with his frat friends instead of his bank job; a disappointment in his father's eyes. He also meets a young librarian, Ebba Garland, which makes him feel young again and distracts him from the sickness.