Nadobudna pisateljica Kelly in njen mož ter filmski režiser Jeff z dveletnim sinom živita spokojno družinsko življenje v Chicagu. A ko se po razdoru prejšnje ljubezenske zveze k njim preseli Jeffova mlajša, vihrava in neodgovorna sestra Jenny, se začnejo stvari hitro spreminjati. Jenny se vnovič spusti v burno razmerje z mamilarsko zgubo Kevinom in skupaj s prijateljico Carson spodbudita razvoj dogodkov v življenju Kelly, ki spozna, da so njen navidez skladen zakon, pisateljska kariera in družinski odnosi potrebni korenite spremembe. Pa so morebitne spremembe za vsakogar v družini enako dobrodošle?
Irresponsible 20-something Jenny arrives in Chicago to live with her older brother Jeff, a young film-maker living a happy existence with his novelist wife Kelly and their two-year-old son. Jenny's arrival shakes up their quiet domesticity as she and her friend Carson instigate an evolution in Kelly's life and career. Meanwhile, Jenny strikes up a rocky relationship with the family's baby sitter-cum-pot dealer.