Elia, the lame daughter of a monastery's head priest, has lived her life as an outcast because of the terrible burn scar on her leg. Everything changes when her father brings home a mysterious boy named Isaac, who becomes her adoptive brother and the only light in her lonely world. What began as a desperate wish for a family that would love her gradually twists into forbidden desire, driving Elia to confess her sinful longing for the brother she can never have.