Van In and his team investigate the death of a Dutch man in a brothel and discover that he was a narcotics investigator working undercover in a joint operation between Belgium and the Netherlands. Van In has a hard time working together with the leader of the narcotics team, but befriends the leader of the Dutch team. Hanne and De Kee are furious at Van In for a remark he made against a judge's wife during a dinner at De Kee's house. Guido's still following flying lessons, and befriends his instructor, who tells him she is pregnant but afraid to tell her boyfriend.
—Dutch90