Alex's relationship with Lauren is tested when he becomes infatuated with a young music student.While Lauren's out of town attending a psychology conference. Alex begins teaching a freshman seminar in economics at Leland College. As he begins his first lecture, he is interrupted by a late arrival, music major Marty Brodie, a rather scattered young woman.When she disrupts his class twice more, first with a blast of classical music from her tape player and then with a muffled sob, Alex dismisses the class early and awkwardly attempts to determine what's wrong. Admitting that she's had a terrible week, during which she broke up with her boyfriend. Marty also confesses that she's terrible in economics and convinces Alex to tutor her for $15 an hour.When Alex arrives at Marty's dorm room for their first lesson. he tries to divert her attention away from her piano. Unable to get excited about the concept of supply and demand. Marty soon teaches an enthusiastic Alex the basic melody line t