Carrie's reignited affair with Mr. Big puts a increasing strain on her relationship with Aidan, and she meets Natasha again in the worst of circumstances: while letting herself out of the Bigs' home. In the commotion, Natasha has an accident, so Carrie takes her to hospital. Charlotte becomes more and more preoccupied with preparations for her wedding, especially finding the perfect wedding dress; she also finds out about Carrie and Mr. Big, and is outraged. Samantha's new boyfriend, Tom Reymi, makes her have an AIDS test, which fortunately proves negative, before he will sleep with her. Miranda is attracted to a man wearing a sandwich costume.