Meester, hij begint weer!

André Buys looked forward to his class's annual medical examination, a day without classes. However the principal sends him on an 'undercover mission' to catch in the act of truancy a violent new pupil, who was kicked out of another Catholic school for staff-abuse. The pupils take the mickey out of janitor Vermeiren, who accompanies them instead and tries in horribly clumsy French to confirm a holiday booking.