The relationship between Carrie and Petrovsky continues to develop, but one thing continues to nag at Carrie. Petrovsky is given to grand gestures of affection (including poetry reading and the composition of original love songs), and that's a bit too much for this slightly cynical New York girl. When Petrovsky takes Carrie to a premiere at the Met, she literally swoons. To balance things out, the artist takes her to McDonald's, where the pair become the most elegantly dressed duo in the establishment's history.

Steve and Miranda decide to finally tie the knot, but vow not to have an elaborate wedding. Keeping things low-key isn't as easy as it sounds, but they eventually manage to work things out, finding a perfect community garden in which to hold their ceremony.

Not to be left behind in the romance department, Harry takes Charlotte to an upscale French restauarant. The meal is wonderful, but later that night, the newlyweds both come down with acute food poisoning. The romantic evening breaks down, as the pair alternates dashes to the restroom. The experience may not be the most intimate, but it does make clear their genuine love and caring for each other.

After seeing herself pictured in In Touch magazine, Samantha decides to get breast augmentation. However, during her initial consultation with a plastic surgeon, a lump is found in her breast. The biopsy reveals that the growth is cancerous, and Samantha realizes that she's in for the fight of her life.

The day of Steve and Miranda's wedding arrives, but before they get to the ceremony, Samantha discloses her condition to Carrie. Samantha is very matter-of-fact, and swears Carrie to temporary secrecy, as not to ruin Miranda's big day. The ceremony is beautiful, but during the reception, both Charlotte and Miranda discover Samantha's secret. The four friends then spend some sobering time preparing for what will no doubt be a long journey for all of them.