The Covid-19 vaccine is here, but there is still uncertainty among many people. Dr. Eckart von Hirschhausen wants to provide clarification and makes himself available as a test subject in front of the camera. The glimmer of hope in the corona crisis came with the arrival of vaccines. But with many citizens there remains a good deal of uncertainty: Has the preparation been adequately tested despite the extremely short development time? And what about possible side effects? Questions that Dr. Eckart von Hirschhausen poses. The doctor and science journalist becomes a test subject of a clinical vaccination study and was accompanied by WDR cameras. The cameras not only follow the heels of the science journalist during all tests and preliminary discussions, they also document numerous meetings between the Hirschhausen family and other study participants and medical staff, such as talking to Cornelia Betsch, psychologist and professor for health communication at the University of Erfurt, about the sensitive topic of vaccination in general.