After Mr. Big confesses to Carrie that his relationship with Natasha is not going well, they return to their old ways, resulting in a night of passion. Charlotte realises her greatest goal in life when she and Trey become engaged, though it was she who had to pop the question. Samantha has a difficult time with Adam, her latest boyfriend. Miranda and Steve are still sharing an apartment even though they've broken up, and they find out that it's not easy living with a former partner, particularly if they want to date someone else.