 Professor Stock and his wife Mizzi are always bickering. Mizzi tries to seduce Dr. Franz Braun, the new husband of her good friend Charlotte. Dr. Braun s colleague, Dr. Mueller, who has had his eye on Charlotte, sees this as his opportunity, even though the Braun s are very happily married. Through a misunderstanding, Charlotte thinks that her husband is interested in Miss Hofer, and asks Mizzi to keep him occupied. Meanwhile Professor Stock becomes suspicious of his wife, and hires a detective to spy on her with the hope of obtaining a divorce.