After a majority of ponies die, only a few remain. There was a war and it made it so harmony no long excisted. The only way to bring the land back to what it was and make Equestria whole, is for harmony to rule most of the ponies remaining.
Years have passed and the Mane 6 are dead when they are needed most. A young mare is tricked into letting a large horde of demons free. She now suffers a slight amnesia, she remembers the betrayal and what she had done, but her name is forgotten.
Sweetie Belle has nightmares every night of a strange mare trying to hurt her. She didn't tell anypony, but she should have, because one night it gets worse.
Most ponies think the zodiacs aren't real creatures on Earth, until now. There are twelve and the Seferic are trying to kill them so they can reign. Every pony is in danger, but no pony understands how dire it is for them to live.
Liz doesn't know what happened to her. She suffers no amnesia, but she never knew. She never knew waking up on a white tile floor can be so scary. She never knew that she was taken here for a pointless reason.
Backed into a corner with a drought, Applejack and Rarity's idyllic life on their farm is facing harder and harder challenges. When an unexpected disaster worsens a bad situation, they will have to make the ultimate decision for their family.
When great civilizations fall, some wonder at why they collapsed or how they disappeared. But once a girl arrives to this planet, one who wields a weapon of light, what she finds may spell tragedy. Yet for whom, it is only fate's decision.
While Twilight Sparkle gains popularity in Ponyville, Gem Effulgence lives as normally as he can. But seeing her again brings back old memories, against which his mind rebels – but to which his heart can only respond.