Birge Tetzner would like to go on a journey through time herself. Unfortunately, no one has invented a suitable time key yet. So she sends the archaeologist’s son Fred on a journey into the past. Birge loves to look for stories in history. When she is not dreaming up a new adventure for Fred, she writes and produces museum tours together with her partner, the sound designer and composer Rupert Schellenberger – preferably for children.