When Ksenia’s husband began to stay late at work and lost interest in his young wife, she suspected that he had another woman. Well, as they say, it’s a matter of everyday life! But, after conducting her own investigation, Ksenia comes to a shocking conclusion: her husband did not have a mistress, but a lover! The girl's despair knows no bounds. Ksenia doesn’t want to return home at all, so she accepts the invitation of a random acquaintance to spend the night with him. But this frivolous act changed Ksenia’s entire future life. She becomes an accidental witness to a murder, and then a prisoner in a luxurious mansion... And there is also friendship and hatred ahead, new acquisitions and irreparable losses and, of course, true love!