When a distraught, love-stricken student gets drunk on a bottle of cold medicine from the school infirmary and causes a classroom disturbance, Ms Humphrey pressures the headmaster to hire a visiting counselor for the student body. In lieu of paying to bring in someone with qualifications, the headmaster appoints staff members to take turns as the acting psychologist. While on duty, Laurence demonstrates new degrees of awkwardness when he gets trapped in a closet with a forward female student who has bet her friends that she can seduce him.