When Beth asks Rachel to ride the buses with her for a year , Rachel reluctantly agrees .
Rachel is a busy writer and professor who loves her sister , but by the time they are in their late thirties , they 've grown apart .
When Beth asks writer to ride the buses with Rachel for a year , writer reluctantly agrees .
Rachel is a busy writer and professor who loves her sister , but by the time they are in their late thirties , they 've grown apart .