Andy is a writer for newspaper classifieds who has been bouncing from relationship-to-relationship since sixth grade. Throughout the film, he loses custody of his dog when his girlfriend, Cheryl, breaks up with him for another man. Andy then meets Lorna, a children's TV show host, but she is too obsessed with her own dog to commit to a relationship with Andy. She's also still smiting because her boyfriend Trevor, left her for Andy's ex, Cheryl.　　Andy also has a fling with another woman, Keiran. Meanwhile, Cheryl takes Andy's dog to a psychiatrist, who tells her that her promiscuity is traumatizing the dog.