Complex sentence: The film continues to follow the lives of middle-aged married couple Pete and Debbie, as they both deal with turning forty, with each of their jobs and their children Sadie and Charlotte adding stress to their relationship.
Split into simpler sentences: The film continues to follow the lives of middle-aged married couple, Pete and Debbie, as they face the challenges of their lives and also turning forty. They both are dealing with turning forty and each of their jobs and children Sadie and Charlotte also adds stress to their relationship.