The man found out that his roommate, with whom they have been living for 10 years, was choosing a rented apartment next door to her longtime lover. Now he doubts his paternity, although he was present at the birth of his daughter. But he wanted to call his beloved to marry, until she confessed that she herself did not know from which of the two men she gave birth to a daughter.

A 64-year-old woman refuses to believe that she became a grandmother four years ago. Her son is sure: the ex cheated on him with everyone she met. The young mother insists that the failed mother-in-law and her son simply do not want to pay alimony. On whose side is the truth and genetic expertise?