After 20 years, carpenter Johannes Keinath returns to his hometown on Lake Constance. When he fights off two crooks during a robbery, he believes he has fatally injured one of them.
The talented, young veterinarian Dr. Tana Fechner falls in love with the riding stable owner Bernhard Bausch. However, love is not a good star, because the doctor is suspected of killing two of Bausch's horses in order to support her work on a rare virus by presenting suitable cases.
