After the passing of their mother three years prior, Ben and Emily have driven their father David crazy by going through one nanny after another. The film shows a life of a young girl, Kate, who looks after her dad. She is looking for work and Beverly Hills offers her a job as a nanny for David’s family. The children take an immediate dislike to her as she is "just another maid." After all the incidents she takes it surprisingly well yet the kids expect her to leave. After a while of shenanigans her and Ben become friends yet Emily keeps her distance. Eventually, David reveals to Kate that his wife was hit and killed by a drunk driver.
Nanny Express did well for Hallmark Channel on the date of its premiere. The film became the highest-rated cable movie of the day and week that it premiered with a 3.1 HH (household) rating, 2.7 million homes and 3.6 million total viewers.