On the day of the summer solstice fire, all of Bad Höfstein gathers to watch as the huge pile of wood is set ablaze. It is the big day for jeweler Heinrich Tauschitz. After delivering a polished speech, he is allowed to ignite the fire. But in the middle of his speech, the summer solstice fire explodes, and Tauschitz, along with the woman standing next to him, Frau Weisshappel, becomes a victim of the flames. Inspector Distl is just about to retire. Now he must investigate who was responsible for the explosion.