 Young Mikajilo and his girlfriend Malena attend yet another work action. This time Mikajilo meets a student Nada and falls in love with her. Malena, who has many times before gone after Mikajilo even though she was not needed in work actions, is left behind. Mikajilo s flirting with Nada provokes general laughter and ridicule and the ambitious "Don Juan" returns to his brigade and his old girlfriend.