VOXLUXbeginsin1999whenteenagesistersCeleste(RaffeyCassidy)andEleanor(StacyMartin)surviveaseismic,violenttragedy.Thesisterscomposeandperformasongabouttheirexperience,makingsomethinglovelyandcatharticoutofcatastrophe—whilealsocatapultingCelestetostardom.By2017,thenow31-year-oldCeleste(NataliePortman)ismothertoateenagedaughterofherownandstrugglingtonavigateacareerfraughtwithscandalswhenanotheractofterrifyingviolencedemandsherattention.