A young unicorn mare has everything she could ever want. The charming husband and a lavish home. Yet her love and devotion to him is tested in the form of societal expectations and a city ravaged by sudden and violent change.
Celestia believes that only true love can vanquish the darkness that has begun to corrupt Luna's heart. Luna, beset by her troubled mind, is approached by a lowly earth pony who immediately falls in love with her and tries to save her from herself.
Ponykind has lived in a society melded around its monarchy's divinity. That image begins to unravel as a stallion unwittingly stumbles upon living proof of a long forgotten legend that may bring the monarchy crashing down.