Twilight was just about to walk to Sugarcube Corner to meet her friends when she heard Spike burp. He ran downstairs to where Twilight was and gave her a scroll.
"Message from the princesses Twi," he said, giving her the scroll.
She read it, eyes wide, and ran out of the room.
"Wait Twilight! What is it this time? Don't tell me that Celestia is your sister and not your aunt!" he shouted.
"I will be back soon, Spike. Tell the others to head to the train station and leave for Canterlot while I get Rainbow Dash!" she commanded.
"Okay!"
"Rainbow! Come here quick! Mother and auntie want us in Canterlot immediately!" Twilight said when she knocked on the door of her cloud home.
"We were just going there though!" Rainbow whined.
"Well now I have to teleport us to Canterlot. I told Spike to tell our friends that we had to leave. Now, let's go!" Twilight exclaimed.
From there, Twilight grabbed her sister and teleported.
Twilight and Rainbow appeared in a flash of light at the gates of the Canterlot Castle, where Joe approached them. "Your highness. Princess Celestia and Luna will see you in the throne room. Please follow me."
They went to the throne room and found their mother and aunt in there. Celestiaia was pacing around while their mother was sitting with worry written all over her face.
"Twily! Dashie! I'm so glad you're here! Something terrible has happened!" Luna gasped.
"What is it? And if it's terrible then how come you said for only us to come?" Twilight asked.
"This only involves you two. You see, our sister has returned," Celestia said.
"Sister?! You have another sister?! What else are you hiding?" Rainbow asked.
"Yes I'm afraid. Her name is Starry Night. She helped Luna with the night. Starry's duty was to handle the stars, untill she turned on us. I banished her into one of the biggest stars, Canis Major. It seems when the stars aligned into Nightmare Moon's escape, so did she," Celestia said.
"But that was five years ago. Why is she now just a threat?" Dash questioned.
"Unlike Nightmare Moon, it took all of her power to get free. Starry didn't have any magic or strength, so she rested. But it seems that she found out about you," she replied.
"She went mad and turned evil because of the birth of you. When she found out I was carrying twins, Starry became the wicked Starlight Flames. You may not have heard the name, which is not unusual. Tia erased a lot of history," Luna said.
"So what is she after, exactly?" Twilight asked.
"Funny you should ask that, she's looking for you two."
Rainbow and Twilight gasped. "What? Why did you call us? Do you want us to find her?" Rainbow asked.
"Um... Well, yes actually," Celestia said, fidgeting with her hooves.
"What does she want to do to us?"
"We are not sure. But, she is older than me and Luna. I am not certain if she is very strong. But, Starlight seems to be strong enough to make a difference in the population."
"You need to tell me she has been, KILLING PONIES?" Rainbow gasped.
"Not even 1% of a town," Luna ensured.
They let out their breath they were holding in. "That's a relief. I was worried she killed like, one-third of a town," Twilight said.
Celestia chucked. "Goodness no! She isn't that evil. At least I don't think..."
"Now, I know this may be a bad time, but have you made your choice whether or not you will move in with us?" Luna asked randomly.
"Actually, we will move in for a week. If we don't like it, than me and our friends will go back to Ponyville. If we do, we will gather all of our stuff and come to Canterlot permanently," Twilight explained.
"That sounds great. Are your friends on there way over?" Celestia asked.
"Yes they are, actually."
"Anywho, about the mission. We need you to go to the Crystal Empire. Starlight has captured Captain Shining Armor and Princess Cadance," Luna said.
"She got to Cadance?!" Twilight shouted.
They nodded. Twilight fell onto her hunches. "Poor Cadance..." she mumbled.
"As of the importance of this, we need you to leave right away."
"But what are we supposed to do? Why can't we have our friends too? We're stronger together!" Rainbow insisted.
"This is a family mission. They would do no good. Starlight only wants to see you. I do not know what she wants to do. But, we will be coming with you two."
"We will leave tonight," Twilight said before leaving the room.
Starlight stared at her crystal ball. She was watching her sisters and nieces get ready.
"Hahaha, in due time it will begin." she said wickedly to nopony in particular.
"Auntie! What do you want with us?!" Cadance shouted from the corner Starlight put her in.
Cadance was covered from horn to hooves in chains. She couldn't do anything but talk. Next to her was Shining Armor, her husband. Starlight walked up to them with a sneer on her face.
"Oh, Cady. You have no idea." Her horned glowed and there was a knock at the door. Starlight went out there and used her magic to make it seem like Twilight and Rainbow Dash were there.
"I hate Cadance! She was never my sister in the first place!" 'Twilight' sneered.
"Yeah that so called Captain of the Royal Guards? Shining Armor was it?" 'Rainbow' laughed.
"More like Stupid Armor!" 'Twilight' cackled.
Starlight walked back in the throne room. Cadance and Shining were shocked and crying. Starlight walked over and helped them relax.
"It's alright. I know how to get revenge on them," she cooed.
Cadance sniffed. "H- how?"
"Join me, and together we will at rule everypony." Her horn was glowing and their eyes turned blood red.
Cadance and Shining nodded, accepting to join her. Starlight smirked and let her magic drown them. They floated in the air, while they transformed. Their fur turned as black as the night. Their eyes were blood red. Shining was giving a pair of wings with blood red at the ends, while Cadance's wings dyed blood red at the end instead of her normal purple. Cadance was the first to snap back to reality.
"Wait! No!" she shouted.
Starlight shushed her then made a Celestia illusion behind Cadance.
"It's okay Cadance. Let her do it. Accept it and it'll feel like heaven," the illusion said.
She gasped, and let the magic over take her. It did feel like heaven. Fueled by hatred. More beautiful than ever. Serving the best pony in the world.
Starlight saw this, and took their free will. Then she let the rest of the transformation be as slow as ever, letting them enjoy it. Their mane's were darker. Their eyes became cat-like. They grew fangs. Cadance's regalia became blood red. Her mane was moving on it's own with instead of purple, pink, and yellow, her color changed to black, blood red, and dark purple. They both grew mildly to the size of Celestia. Finally, Starlight set them down.
"Rise," Starlight commanded.
They did has told.
"Now, who do you hate?" she asked.
"We hate Celestia, Luna, Twilight Sparkle and Rainbow Dash, Princess Starlight Flames," they said in unison.
"Please, call me Queen Starlight Flames."
"Yes Queen Starlight Flames."
"Now, who are you loyal to?"
"You, and you alone, Queen Starlight Flames."
"Perfect. You two are now known as Cadanza Flames and Shining Flames, my children of the stars." she cackled.
'Better watch out, dear. I have two that you love on my side.'