Ekaterina belongs to a noble, but rapidly impoverished family. In an attempt to improve her well-being, her father marries her to a rich, rootless industrialist. After three years of an unhappy marriage, Katya unexpectedly becomes a widow: her husband is poisoned by an unknown person. The stepson and parents are going to fight for the inheritance of the deceased, the investigation suspects the heroine of murdering her husband, and her only friend sends her lawyer brother, who hates Katya’s family, to help Katerina in her place... How can you survive a battle where you have many enemies and not a single ally? ?