Reelingfromherhusband'saffair,Rosecollideswithamaroonedteenagerinaboarded-upDelawarebeachtown.Devastatedbythenewsofherhusband'saffairandconvulsedbywavesofgriefandrage,twentysomethingRose(GretaGerwig)-vengeful,abitunhinged,andstillcladinherpajamabottoms-drivestoasleepyseasidetowninDelawareintentonfindingherspouse'slover.Climbingintoanoldlighthouseonthebeachtoswillasix-packofbeer,RosestumblesuponasleepingBritishteenager(OllyAlexander)whomshewakesandinsistsontakingsomewhere.Strandedbysomeunknownparty,thechatty,ludicrouslyattiredyouthaccompaniesRosetoabrewerywhere"theotherwoman"wasrecentlyemployedandthentoherparents'summergetawayhouse,slowlyattuningtoheranguish.Asthegreywinterdaysrollby,themismatchedpairembarkonaseriesoffrolicsomeadventures-Englishdancelessons,role-playinginpublic-thatbringthemintocloserquarters,ignitingabittersweet,perhapsimaginaryromance.ThisquirkyromanticcomedyfollowsRose(GretaGerwig),whoselifechangesafterdiscoveringherhusbandsaffair.Shelatercrossespathswithamaroonedteenagerinaboarded-upDelawarebeachtownandbeginsadelicatefriendship.Thisengagingandinsightfulfilmwillmakeaudiencesappreciatechangeforbetterandworse.