With Canterlot's steam-powered upgrade from the Great Innovation, Directors Celestia and Luna thought the upcoming wedding in Canterlot would dazzle everycreature around. But then the cyborg changelings came - and in their wake, the return of Equestria's formerly most prolific usurper. Can Sunset get the truth from Chrysalis in her last Canterlot case? And will she like what she finds - about Chrysalis or herself?

Pic credit goes to Underpable. Commission for PrussiAntique.

Thanks to Steel Quill, SweetBanana, and TCC56 for pre-reading/reviewing!

WARNING: Steampunk Sunset Shimmer Strongarms Sadistic Steel-Swathed Shapeshifters. Say that three times fast.