The plot of the movie unfolds through the testimonies of three young sisters: Uring (Pia Peron), Luray (Sachi Sanders), and Elya (Jean Andrews), who recount the grisly sexual molestation they experienced from their adoptive father Timo (Michael de Mesa), an alcoholic gambler and sex pervert. The title comes from the sisters' work as stone tillers in a quarry where most residents earn their living.