TheplotrevolvesaroundtheteenagebestfriendsClaraandSydney,whoembarkonaroadtripforanunusualreason:tostealapetlizardfromthelatter’sex-boyfriend,Liam.Clarahasbeendiagnosedwithaninoperablebraintumorandissecretlystrugglingwiththerevelation,havingbeentoldthatshehasonlysixmonthslefttolive.Sydneyiscomingtotermswiththeirpotentialseparationbeforeleavingforcollege.