With the invitation arriving as a cryptic message in a bottle, Joburg's party set are left guessing as they climb into a cavalcade of stretch limos at Sandton City on Tuesday evening.
"It doesn't seem to be too far," says socialite Peta Eggierth-Symes, who has swapped dressing society dames in ballgowns as the owner of shuttered boutique Pallu for working her Twitter feed.
"It might be Comair's new offices," says Gisèle Wertheim Aymés, the media maven who has travel on her mind: she's about to jet to the US to spend two weeks soaking up American spas (all for work, of course).
It turns out Gisèle isn't too far off the mark as we make our way through the airline's business lounge Slow in the City to The Course restaurant, its latest offering.
Guests, including Goldman Sachs South Africa's Colin Coleman and his partner, Nerina Labuschagne, and Vanessa Carreira-Coutroulis and her nightclub-owner hubby, Chris, are handed wireless headsets as they walk in.
Socialising sisters Basetsana Kumalo and Johanna Mukoki, and Idols judge Unathi Msengana (or it is back to Miss Nyaki?), are posing away with conceptual artists Dear Ribane's living installation at the entrance.
I ask Unathi, looking like the most glamorous of divorcées in her Bedoo Original beaded locks, a revealing Asanda Madyibi gown and Christian Louboutin heels, what she's been up to.
"Life," she answers.
Inside the plush restaurant, the night's MC, Taryn Louch, makes a beeline for me to point out that she isn't wearing black but mustard, after I called her out for wearing the un-newsprint-friendly shade last year.
Thanks for taking the hint, princess ...Meanwhile, at the bar I say hello to the land's most striking redhead, Jena Dover, who tells me she's playing a mom going through a divorce in Nanny 2: Mission Africa, the German flick that made this newspaper's front page last week after cinematographer Carlos Carvalho died after being hit by Gerald the giraffe.
Jena says the cast are still shaken, and filming was postponed for a few days.
We are asked to put on our headsets and, although I hope we'll be jolling to a silent rave, we instead listen to nine long minutes about the restaurant's tapas-style menu and the night's whiskey and food pairing.
Zzzzz ...
The big revelation, though, is when Mampho Brescia gets on stage - the sassy actress has a sultry singing voice.
On to the food, and guests, including Paddy Hinde (the grandson of late Benoni car dealership tycoon Pat), his partner, Kimberly Dally, and Comair's Iain Meaker, relish pairing their Glenfiddich cocktails with dishes like goat's cheese wontons with pear and citrus salad, pulled pork on Melba toast and chicken breast roulade with cabbage coleslaw.
The night's last big wow is a dessert of chocolate tarts, macaroons and slabs of milk chocolate reeled in as part of a massive balloon display...