In1960sQuebec,Agathe,anasthmaticchildwithavividinnerworld,growsupinanisolatedsuburb,lulledbythehauntingsoundsofapassingnighttrainthatsparkherlongingforanelusiveelsewhere.HermotherThérèse(theremarkableLarissaCorriveau),asecretarybydayandartistbynight,createsatender,offbeatdailylifewithherflamboyantfriendMaurice,afash...