This story is a sequel to Thorn of the Rose

Cadence has settled in to her new home and new life in Clockwork World, as an Orphan: a pony trained to step in and protect other worlds when threats appear beyond what they can handle. Possessed by a force known as the Swan that will not allow her to remain dead, it gives Cadence a chance to use her powers for good and find meaning in her life. Her new life, however, all too soon brings her into contact with specters of her past who desire the Swan for their own ends, putting everything Cadence cares about in danger.

Final story in the Songs of Lost Children series.