 Ria is furious when her mother sends a boy from their neighborhood  because it s about time she got dating  and gets rid of him mercilessly. Jo needs a volunteer to practice for his dentists exams, but the only willing mouth is Ria s, which he prefers to see closed. When Jef receives instructions from Jeanne to spend his whole day off cleaning, while Odilon goes trough advertisements from cleaning ladies, he hopes to solve both problems by having his candidates do  test cleaning  in his house, without telling any there are other applicants.