 Jef just said to Odilon all he needed after  their  work on the rooms to get back in Jeanne s good books is another male boarding student, and there comes Billy, a dentistry student from a wealthy family, who loves the sweets shop and has a room too far from his faculty; seeing how easily Odilon is (ab)used makes him decide to move in. Jeanne is even more delighted to find economics student Charles-Victor is back, having found nothing better near his campus, but before she can tell him, Jef rents the same room to Peter, lawyer Deprez s son. Jef is furious, but Jeanne and Odilon go ahead with a long-term profitable solution: an extra room in the attic; once it s ready, Peter asks his advance back, due to failed make-up exams. Now Jef has an extra room to flog, and there comes foxy biology student Betty Billen, exactly what he craves, Jeanne fears most...