Celestia feels guilt and regret-- things her sister knows too well.

The Sun is dying, and Celestia will stop at nothing to preserve it.

The Nightmare has taken over Luna. But the Nightmare is her friend, isn't it?

Years after our world was destroyed, we have thrived. We have prospered. Ponies have lost the ability to obtain cutie marks, so we artifically create marks. When I turn thirteen, I will get marked, and in turn gain freedom. But the Union lies.

Luna creates a friend from nightmares.

Luna is losing her sanity.

A year after the Nightmare Rarity incident, Rarity is troubled. Her dreams are darker as days progress. But it's too late by the time she sees the nightmare's true intentions...

"Oh, sister. I've always been like this. You're just too blind to see it."

The time has come. Equestria will fall at the hand of the nightmares, unless somepony stops them. But with the Elements out of sight, how will they do it?

Luna is banished to the moon, but she still struggles. And Celestia is steadily getting worse and worse, with no sister to comfort her. Note: This is the sequel to Darkness and Light, so if you haven't already, read that first.

This is a story of the two alicorn sisters, a tragic story... Their story is a dark one, a troubled one. And Luna isn't the only one who struggled. As much as Luna was pained, Celestia was even more. But she's just hiding it better...