Louis finds a backpack full of luxury watches and assumes they are cheap fakes, completely unaware of the danger. While the hotel teeters on the brink of chaos, Ludo finally discovers the identity of the mystery guest.

The Maenhouts are enjoying their suite until Marie catches her parents in an embarrassing moment. Meanwhile, a spark begins to fly between Grandma Toos and Maurice. As the hotel dives headfirst into the water polo tournament, romantic tensions are rising everywhere.