Celestia was in the throne room with a few of her ministers when the pegasus charged through the doors yelling: "Your highness. Your highness. We have a problem."
Celestia raised from the cushion she sat on an asked what was going on. The pegasus took a deep breath and asked for the ministers to leave. It was a matter between the princess and her sister and no one else but the princess was to hear his story. The ministers, too afraid to oppose the princess, left after she asked them to.
"So, my dear soldier. What is it that is so urgent that you crash an important meeting between my cabinet and myself?" she asked sternly, sounding annoyed even though she was relieved that she had gotten a break from her work.
"Your sister, highness, has betrayed Equestria." he said, regretting it the moment he saw the look on Celestia. He was well aware that the princess was not eager to hear that her sister has turned against her again but keeping the truth from her could have far worse consequences for all of them.
"How come you think that my sister has betrayed me again?" she asked. Her voice was calmer than she looked at the moment.
Nonetheless he answered honestly after taking another deep breath. "While I was in the crystal empire to scout out the surroundings for another expansion, I have found a place further in the north that wasn't tormented by the ever raging snowstorm that was supposed to be there. It seemed that the snow storm is protecting this place.
I ventured further north and found a city called Flankrium. They invited me in asking me where I came from. When they heard of Equestria they asked me many things about how things are going. The last thing they knew was that Discord was supposed to be defeated . So I told them what had happened here lately and with joy they told me their story. They told me that the kingdom of Winterwald, or Plenaris I am not sure, has been reunited after it was slowly falling apart.
When I asked how they came so far in the north and knew from Equestria they told me that Princess Luna had created Winterwald, or Plenaris, a thousand years ago. It was her that reunited the kingdom, too.
Princess, there was a whole kingdom that existed for a thousand years in the north completely secluded from Equestria and your sister is the one responsible.
But, what are we supposed to do?"
Celestia had fallen back on the cushion. This was too much for her to take. Her sister not only had disobeyed her before she was banished. She was sneaking out and ventured to her kingdom. But how? She was here everyday and the journey to the crystal empire took more time than Luna had to go and come back unnoticed.
"Have you told anyone else?" the princess asked the pegasus.
"No, I haven't. It seemed too dangerous and too personal for the ears of anypony else than you, your highness."
"Good. I want you to keep quiet about it. In the meantime I am going to have an important discussion with a certain sister of mine."