 Dennis Patterson has to give a talk to 70 bricklayers, outlining to them the dangers of the AIDS virus. He attends a course, and afterwards goes to the local pub, to watch the course leader give a TV interview. Unfortunately, he finds a more than cynical Oz at the bar. Naturally Oz displays a bigotted attitude towards the whole thing, but Dennis decides that if he is to convince 70 brickies of the danger, he must make Oz aware also. After much fruitless debate, Dennis cannot get through. Perhaps a joint effort with the good Doctor himself can rid Oz of his ignorance.