Lascivious rock musician Jeff Nash went missing during his stay in an Antwerp luxury hotel. As a favor to the owner, the chief, as society friend, and acting commissioner Wim Jacobs arrange a discrete undercover investigation. Tom, whose ma discharged herself from hospital hoping he'll take her in, must play the bellhop, thus winning barman Robbie confidence. Fien plays a rich guest, flirting with Dutch big spender Marco Mulder. They thus attend the illegal poker nights for big stakes in a lounge closed for renovation, with a rich couple allegedly practicing 'open ...