The life of the main character, successful lawyer Alexandra, changes completely when her father, who disappeared many years ago, suddenly appears. And along with him was Frosya, Alexandra's sister, whose existence she did not even suspect. The father asks the taken aback Sasha to look after her sister - the girl is seriously ill and cannot be left alone. He promises to return in a few days and disappears. The heroine will have to make a difficult choice: let unexpected relatives into her life or return to her usual reality.