Kirill, a student of the Faculty of Psychology, is having a hard time with Sonya's "friend-zone". They used to be close friends, but secretly from the girl, Cyril was head over heels in love with her. Kirill is sure that he will achieve Sonya if he studies the psychology of the friend zone in his term paper. But in order to prove that friendship can be turned into love, he decides to test the hypothesis on his friends.