40 years past and separate Mark Darcy, Bridget Jones has returned to his old apartment. Single celebrates its birthday, his friends being far too busy with their own families. If the sentimental point of view nothing seems to go, from a professional point of view is fulfilled as Bridget and television producer. Decides to spend the weekend in the company of a classmate at a famous music festival. Here, Bridget get acquainted with Jack, a millionaire. Spend the night together. Shortly after, he’s him and discovers that Darcy is pregnant.