Table 12 is the venue for three stages in a journalist's life. She meets a rock star for an interview after which she starts dating him. She then breaks up with him and finally reveals some big news to him.
It's the first meeting of David's parents, Sheila and John, with his latest girlfriend and David has not been forthcoming with many details about her. When he is late to the lunch, the conversation becomes very interesting.
Guido is an Italian opera star and he proposes an unusual 'marriage' to Karen. For the few months of the year when he is in London he wants to be married to her. She is free to do what she wants for the rest of the year, just as he is.
It's Jean's birthday and her children, Robert and Mel, are with her at table 12 to celebrate. Mel is video recording the event other family members. Mel and Robert are constantly bickering which upsets Jean.
Stuart and Sharon are in the restaurant when a man is having a diabetic fit. Stuart, in particular, is uncaring about the man's condition. Even after the man dies life in the restaurant continues as though nothing happened.