The Heir of Sombra

The Northern Storm that almost destroyed the Crystal Empire has mysteriously ended up getting more proficient and destroyed the Crystal Heart on it's own. Now the Crystal Empire, Shining Armor, Cadance, and Flurry Heart, have all vanished again, and without the source of love, it starts affecting the rest of Equestria into darkness. The story of how the storm itself formed is explained more as it involves the death of Obsidious, the last unicorn ruler of the Unicorn Tribe during the Windigo Ice Age before King Bullion that is a descendant of King Sombra on his unicorn side who tried to gain power through a relic by doing the most up horrid of things as the relic was fuelled by hate, and not only attracted the Windigoes, but their opposites, the Wechuges which also feed on hate and create heat, resulting in a war against the two that gave him more power until he was defeated and overthrown at last by Bullion, and later on became the Pony of Shadows before the missing pony before Stygian during the Great Fear Wars, and was thought to be lost in the North since. But he had been revealed to be responsible for the storm having a hive mind, as it was named after him after they felt it was as cruel as him, and thus has grown in power since Windigoes and Wechuges have discovered one pony who hated the self-destructive location of the Crystal Empire more than anypony else: Garnet Scratch, whose family had died during Flurry Heart's accident. Thus, with them gone, and Garnet becoming a new vanguard, the heroes and Lodgers need to get them back before they are lost forever, with help from a lowly pony traveler named Aventurescence, a heavily-fashioned Unicorn lone ranger who is the keeper of the old school of another legend named Crystal Lode, the first pony and former protégé of the Crystal Empire's previous leader, Princess Amore, who also looked up to Sombra as a tragic figure until he betrayed him, leaving him with demons he had to face for countless years, and reportedly froze to death, and also reveals the story of Sombra's heritage to not just Umbrans, but also Obsidious and how he has just become strong enough to claim the Crystal Empire. Now the heroes must find a way to get them back through secrets Lode had for fighting off a storm that was strong enough to fend off even Celestia and Luna. But how?