Once they had boarded the train, ponies were giving Starlight odd looks given that she had two unicorns held in a tight grasp with her aura. One pony who was not sitting too far away from them asked, "Excuse me, why do you have those two held in your aura?"
Another added, "Don't you know that restraining ponies like that is a crime?"
Starlight glared at the two and replied, "Once Princess Celestia finds out what these two did, she will see nothing wrong with this."
Moondancer added, "She is the princess's protege so I'm pretty sure she isn't going to mind."
Once they knew that Starlight was Celestia's protege, they dropped the issue but continued to give Starlight a slight glare. Once they arrived in Canterlot, Starlight and her friends were the first to exit the train. Like it was on the train, they received strange looks like they did and also like it was on the train, they were approached by ponies about it but they dropped the issue once they found out Starlight was Celestia's protege.
When they arrived at the castle gates, the guards gave them a strange look but not so much because of Starlight restraining Trixie and Sunburst but more because she was back so soon. One guard asked, "Starlight, you're already back? I thought you were heading home."
The other guard asked, "And what is up with these two? Why are you restraining them?"
Starlight was not sure if sharing what happened would be in anypony's best interest so she replied, "That information is classified. I just need to take them to Princess Celestia."
The first guard sighed, "Very well. You know the way to the throne room."
Starlight nodded at the two as she and her friends headed in. When they arrived they noticed that Celestia was not there, just a very fatigued Princess Luna. When Starlight saw this she asked, "Princess Luna, what is wrong? Is Celestia not feeling well?"
Luna replied, "I think she may have been premature in letting you go home. It wasn't too long after you left that she had to lay back down." She then took a look at how Starlight had two ponies in her aura. She developed a slight frown and continued, "And Starlight Glimmer, do you not know that restraining ponies like that is illegal?"
Starlight replied, "I know it is but I caught these two engaging in illegal activities in Ponyville and this was the only way to get them up here."
Luna ordered, "Release your hold on them so we can find out what happened." Starlight released her hold on them and Luna turned to the two. She asked, "Could you two state your names and why it is that Starlight has brought you up here?"
Trixie replied, "I am The Great and Powerful Trixie!"
Sunburst added, "And I am The Brilliant and Amazing Sunburst!"
Luna sighed, "Could you two just use your regular names." She then gave the two a glare and asked, "Now, why is it that Starlight has brought you up here?"
Trixie boasted, "Well Starlight thinks that we committed some crimes but we didn't! She simply doesn't like The Great and Powerful Trixie and is going to make something up!"
Luna knew that Starlight would never do such a thing so she stood tall, approached the two, spread her wings wide, turned to Sunburst and asked, "Tell me, why did Starlight bring you two up here?"
The way Luna had her wings spread intimidated Sunburst a bit, enough that he would answer her. He replied, "Well, The Great and Powerful Trixie and The Brilliant......"
Luna interrupted, "Speak normally please, none of this third pony stuff, ok."
Sunburst continued, "Very well. The two of us decided to do a show in Ponyville and when we discovered that Celestia's little pets live in Ponyville....."
Trixie added, "We decided to cause some trouble!" She then pointed her hoof at Moondancer and continued, "Especially once SHE found out the secret behind our tricks."
Luna was not thrilled that Trixie would interrupt Sunburst but let it slide since she may be able to get more information that way. She then cast her gaze at Moondancer and asked, "Moondancer, what was it that you discovered that upset them?"
Moondancer stepped forward and replied, "Your Majesty, what we discovered was the secret behind their transfiguration spell. I noticed that when Trixie allegedly cast the spell that she would throw down smoke balls. It was while the smoke is thickest that Sunburst swaps out an apple for an orange and that caused the crowd believe she actually cast it."
Luna sighed, "I see." She then turned to Trixie and asked, "Trixie, why would that upset you? Most ponies know that is how showponies do it, they just go along with it and enjoy the show."
Trixie was not thrilled that Luna would say that. She scoffed, "You honestly think ponies know that? They do not know that, they think that The Great and Powerful Trixie can do it and after a bit of studying, we both can now!"
Sunburst put his hoof up to his forehead and sighed in disgust when she revealed their studying, believing that she was likely going to give away their illegal activities. Luna knew that showponies don't usually take books around with them and wanted to know how they studied. She asked, "So, when was it you studied this?" Trixie began to reply when Luna interrupted, "And don't lie to me, you two don't remind me of the type to carry books with you."
The two gave one another nervous looks causing Luna to continue, "Well?"
Sunburst replied, "Well you see your Majesty, we knew that Moondancer would expose us as charlatans so we decided that one of us would break into the library and steal the books we needed to......"
Starlight lit up her horn in anger and snapped, "What? You two broke into my home?"
Both of them saw not only Luna's scowl deepening, but Starlight looking like she was ready to strike them with energy. Luna saw this too and suggested, "Starlight, I know you're angry but control your anger until we have everything sorted out."
Starlight sighed, "Yes your Majesty."
Luna turned back to the pair and continued, "Alright, now which of you two broke into the library?"
Trixie boasted, "Well, The Great and Powerful Trixie decided to break in there because she wanted to get back at Starlight for failing her when she was a filly!"
Luna was getting sick and tired of Trixie continuing to speak in the third pony but decided that if she could get more information out of her, that she would allow her to continue. She asked, "And?"
Trixie continued, "Well, Trixie was able to break in and stole a couple of magic books and once Trixie learned that was where Starlight lived, she decided that the two of us should cause a bit of minor mischief!"
Luna's glare continued to deepen as she asked, "Minor mischief? Would one of you two care to elaborate?"
Trixie continued, "Well we studied not only transfiguration spells but also duplication spells so the following morning we headed out and Trixie turned some flowers into a cactus!"
Luna asked, "Oh?"
Sunburst added, "And then we decided to play a prank on a pegasus taking her rabbit into town so The Brilliant and Amaing Sunburst turned it into an angry wolverine."
Trixie laughed, "And The Great and Powerful Trixie duplicated it!" Her laugh became more of a cackle as she continued, "And seeing her hide in a tree was hilarious!"
The fact that they would do that to another pony angered Luna greatly. She flared up her horn and growled, "And what did this pegasus look like?"
Trixie laughed, "She was yellow with a pink mane and tail. The Great and Powerful Trixie would swear she has mane extensions given how long it is but it was funny seeing her so distraught!"
This caused Twinkleshine, who is usually calm and mild mannered to flare up her horn. She yelled, "You did that to Fluttershy? You caused her that much distress?"
Luna spread her wings wider and suggested, "Twinkleshine, like it was with Starlight, could you hold your anger until everything is sorted out?"
Twinkleshine replied, "Yes your Majesty."
Luna turned her attention back to Trixie and Sunburst and continued, "What other 'minor mischief' did you two engage in? I highly doubt Starlight would have brought you two up here just over that."
The two looked at one another nervously before Sunburst replied, "Well we had one more minor thing we wanted to do before leaving town but on the way there we ran into" He pointed his hoof at Starlight's friends and continued, "those four."
Luna asked, "Oh, and what happened there?" Her voice became more intense as she continued, "Whatever it was, I'm sure it wasn't anything good."
Given that Trixie did more than Sunburst in that interaction she boasted, "Well, Celestia's little pets come out of their house as we were passing by and the unicorn with the glasses just had to mock Trixie's magic show so Trixie decided that she had to be punished!"
Luna asked, "Oh, and what do you mean by 'she had to be punished?'"
Trixie again boasted, "Well, she called us charlatans again so Trixie did something very funny. She turned her glasses into a snake!"
Sunburst added, "And The Brilliant and Amazing Sunburst duplicated the snake!"
The fact that they would do something that would adversely affect another pony caused Luna's anger to increase. She lit up her horn and reverted to the ancient way of speaking, "What? Thou took her glasses away and took away her ability to see?"
Trixie giggled, "Yes, Trixie did that!"
Luna grabbed Trixie in her aura and yelled, "What thou didst was most vicious and highly illegal! We shall make sure thou art punished severely for this!" Luna calmed down a bit and continued, "And what else did you two do?"
Sunburst replied, "Once we got away from those four we decided to ruin the library to get back at Starlight for failing us as a tutor when we were young."
Luna finally sat Trixie down and sighed, "Oh, and what was it you two did?"
Trixie again boasted, "Well The Great and Powerful Trixie used her transfiguration spell to turn it into a teacup and Sunburst duplicated the teacup to make it hard for Starlight to transform it back!"
Luna turned to Starlight and asked, "Were you able to transform it back?"
Starlight replied, "Once I forced Sunburst to get the original teacup, I forced Trixie to change it back. It was after that when my friends and I decided to bring them up here."
While Luna was not as familiar with Starlight's friends as Celestia was, she could tell that one was missing, Lemon Hearts. She turned to the five and asked, "What about Lemon Hearts? Did she not see any of this and is that why she is not here?"
Starlight replied, "Yes, she spends most of her time at Sweet Apple Acres since she is part of the Apple Family. She did not see any of this?"
Once Luna found out everything, she turned to Starlight and ordered, "Join me out in the hall. I believe we need to discuss what their punishment should be."
Starlight agreed and followed Luna out into the hall. As they left, Trixie and Sunburst couldn't help but feel nervous. They knew that both of them were angry and while Starlight may not have much pull with Luna, that she may very well take Starlight's suggestions seriously given she is her sister's protege.