A police chief takes in a young child she finds near the site of a mysterious accident who has no memory of what has happened. The investigation draws her into a conspiracy larger than she ever imagined, and the child’s identity is at the center of it all.

This new chapter of “Sex and the City” follows Carrie, Miranda and Charlotte as they navigate the journey from the complicated reality of life and friendship in their 30s to the even more complicated reality of life and friendship in their 50s.