The best way to become single is to get married. Lyusina’s friend Nastya desperately dreamed of a wedding dress and a Mendelssohn march. And there was a candidate for a husband: programmer Mikhail, with whom she lived in a civil marriage for six years. However, the beloved was in no hurry to propose. How to bring him to the registry office? The ubiquitous girlfriend Lyusya Lyutikova advised Mikhail to quit for educational purposes. She is sure that the stubborn man will be afraid of the breakup and will run to get a stamp in his passport. Yeah, I ran, but not with Nastya, but with another girl whom I barely knew! Nastya is hysterical and blames Lucy for her failed personal life. And then Mikhail’s bride is killed right in the Wedding Palace! Suspicion falls on Nastya, who had both the motive and the opportunity to commit the crime. To save her friend from prison, Lyutikova begins her own investigation...