Dave's bachelor party is organized for him and his friends Mark and Willem by his fiancée's younger brother, Bruno. It is taking place at a quaint cottage in Vresse-sur-Semois, near Bouillon, where the trio used to come every year. The four are all reported missing, but before long three of them are located. Except for Dave. The team and local police "chief" François, who has only three officers on duty, find out that the trio's former fourth musketeer, Aron Van Snick, who is dishonest about being in recent contact with Dave, is implicated in the case. The truth, as it happens, stretches back years, to when a local girl vanished without a trace.
—KGF Vissers