The younger sister told the older one that she had been replaced at the maternity hospital. While the older one refuses to believe it, the younger one has already found a replacement for her, and this woman also agreed to a genetic examination.

The son, dying, bequeathed to his mother to take a DNA test with his only daughter. Grandmother does not recognize her granddaughter from birth, as she is sure that her son was infertile. But the girl's mother is convinced that she knows exactly who gave birth to her. Whose side will the truth be on?