Dr. Valerie Klein is a highly regarded pediatrician and – with a height of only 1.32 m – the only person at the children's hospital in Stuttgart who sees eye to eye with her patients. Despite her professional success, her life is anything but easy! Within the hospital, she has the full support of everybody except the arrogant Dr. Lang, who is convinced that he wasn't appointed senior physician because he is “healthy, normal and heterosexual”. Challenging times await Valerie and her young patients!