This is a retelling and extended version of the Canterlot Wedding with a couple new original characters who will take the story down a different and darker path.
Link to TV Tropes page:
http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/LovedAndLost
The lives of Celestia, Luna, Cadance, Shining Armor, Spike, and the Mane Five have gone downhill. They all reflect on the events that led to their situation. The changelings were beaten but the wedding was cancelled. Prince Jewelius, another nephew of Celestia and younger cousin of Cadance, holds all of them responsible for the disaster. He then has the three princesses removed from power and all ten of them exiled from Equestria while he takes the throne for himself. With the fate of Twilight Sparkle unknown, the group of outcasts decide to return to Equestria to find their beloved unicorn friend and earn back their lives. But Jewelius is determined to get rid of them no matter the cost.