In high summer, municipal counselor Franz Wagner's poisoned corpse is found in Father Christmas suit in the studio where he stood in for the ill planned model for a competition to present publicity images for Rosenheim's Japanese twin city Ichikawa. Photographer Clemens Wenzl and elected 'Christ child' Lisa Berger see no motive.Fresh widow Sylvia Wagner might have sought to avoid her inherited fortune being splits as the marriage crumbled, lacking a prenuptial. She had access to the poison, which was administered by vitamin capsule. Lisa Berger had an affair with the victim, which opened blackmail perspectives. Achziger and Marie need a new campaign theme, without access to the crime scene studio, and fear competition from petty neighbor town Ganting's mayor Karl Schretzmayer.