Выпуск 1234. От кого родила девятого ребенка?

A single mother from the Voronezh Region got tired of counting every penny and decided to demand alimony from her former roommate for her two-year-old son. However, the man is sure that he absolutely cannot be the boy's father. Why do men's friends think that a single mother doesn't care about her son? And in this case, who is the father of two-year-old Sergei?