喜剧片《单身日记:好孕来袭》讲述了布里切特·琼斯(蕾妮·泽尔维格 Renée Zellweger 饰)偶然邂逅了帅气的亿万富翁杰克(帕特里克·德姆西 Patrick Dempsey 饰),同时,与她有着复杂情史的达西先生(柯林·费尔斯 Colin Firth 饰)也重新回她的身边。两个完美男人同时闯入布里切特的生活,并且给她带来了一个巨大的“惊喜”,让她深陷甜蜜的烦恼之中。而布里切特的真命天子究竟是谁呢?
Bridget's focus on single life and her career is interrupted when she finds herself pregnant, but with one hitch ... she can only be fifty percent sure of the identity of her baby's father.