Mary lands a job with a lecherous boss and Rab, fearing she may dump him, turns to his pal Jamesie Cotter for advice on improving his love life. At the pub, Norrie has employed a new barmaid, Davina, who is in the process of changing sex, and the guys are having confused feelings about her. Davina covers for Mary at work and the boss propositions her only to find out that she's a man.