21 Questions: Eldar, Bakhtiyar, Elnur and Alihuseyn are childhood friends. Eldar is thinking of marrying the girl he loves, Gunay, but he doesn't have the money to have a wedding. While looking for money with his friends, he sees an advertisement for a program called "Lie Detector" with a prize of 10,000 manats and joins the program. As a result of the questions asked throughout the program, Eldar is confronted with his interesting and funny past.