Charlie, a very gifted, young acrobat, cannot find employment. A dancer and colleague, whom he trained, has gotten him a job as a stagehand at a vaudeville theatre. After a number of chaotic events and some highs and lows - none of which ever discourage him - his hour arrives: an act can't go on and "Akrobat schööön" can finally make his grand entrance.

Country Dr. Robert Koch is desperate: a tuberculosis epidemic is decimating the children in his district and no one is able to do anything about it. Every fourth child is already sick and the parents must helplessly watch as their young ones die. Now Koch is undertaking to find the cause of the tuberculosis --- something he has already been working on for years --- which has been causing this plague of illness. His work is made more difficult by envy; for example, that of his teacher, who was wounded defending his honor. But his greatest obstacle is the famous Berliner scientist and Reichstag deputy, Privy Councilor Rudolf Virchow: He is extraordinarily skeptical of Koch's theory, that the cause for tuberculosis is a bacteria.