It's a testing time for everyone: Joanna and Harriet are each convinced they're pregnant, Martin sits his exams for the hundredth time, and Mac surreptitiously attends an interview for a promotion

Caroline is broody, but she's confused. Is Guy the good guy or the bad guy? Is Mac the good Mac or the bad Mac? Martin gets his exam results.

Martin loves Caroline. Caroline loves Mac. So does Sue White. Mac has a girlfriend. Statham loves Jesus, or is it the chaplain? Joanna loves Lyndon. And Guy loves Guy but he pretends to love Caroline.