Quatre semaines et cinq jours après la fin du "Journal", Bridget Jones entretient toujours une "relation fonctionnelle avec un adulte mâle". Mais tout n'est pas gagné car une amie parfaitement déloyale rôde et son méticuleux travail de séduction a raison de la fidélité de Marc.
Some sisters are good friends, some are not. Somtimes there is more hate in a family than there is love. Karin is beautiful and has lots of men friends, but she can be very unkind to her sister Marcia. Perhaps when they were small, there was love between them, but that was a long time ago. They say that everybody has one crime in them. Perhaps they only take an umbrella that does not belong to them. Perhaps they steal from a shop, perhaps they get angry and hit someone, perhaps they kill...