"We are going to kill him."
"Luna..."
"Blueblood will also sit in the dungeons for a year or two for his indiscretion."
"Don't act like you didn't want him to stop crying and complaining."
"Sister, thou will tell us where Nicholas is hiding."
"I think it kinda looks nice like that..."
"Sister, if you try to convince us that our moon looks better in blue, we will make you wish Nightmare Moon was back."
Princess Luna was NOT happy. She had woken up feeling slightly off, and still fuming over Nick's prank the day before, but she decided to put those feeling aside and raise the moon. Unfortunately for her, a certain purple pony princess had a correct hypothesis, and the kingdom was bathed in blue light from her now-colored moon.
Storming out of her bedroom in rage, having put 2 and 2 together and realizing Nick and poision joke were the likely cause after last month's 'green sun' incident, Luna made her way to the royal bathhouse to have the antidote prepared. But there was a problem.
"I'm so sorry, your highness," began the spamare. "Prince Blueblood requisitioned all of our antidote to run a bath in the communal bath, and he just left. C-could I interest you in a hooficure instead?" She hesitantly inquired.
Catching up to Blueblood was no easy feat with the nobles constantly bombarding her with questions about her part of the sky's new paint job. Several scientist ponies even warned her about blue light potentially causing insomnia in some ponies, which only spurred her anger on further. Just when she thought it had reached a fever pitch and could not climb any higher, she caught her nephew and demanded to know why he took all the antidote for himself. His answer nearly earned him a trip to her miscolored space rock.
"Oh, aunite, it was dreadful! After that Blarity pony laughed at me, I cleaned up and went to bed. But I learned that the bath was full of poision joke, and it... it had the most HORRIFYING effect! I had to take all the antidote the ensure it would stay away for good." Upon Luna's inquiry as to what the poision joke did to him that was so horrific, he replied, "Oh, it was terrible! I had a single... a... A SPLIT END IN MY MANE!"
Luna promptly tossed the royal brat in the dumpster to give him more to worry about than a split end, and went to find Celestia, which brings us to right now.
"We will ask thee one more time, Celestia. Where is he?"
Celestia sighed. "Fine, he fled to ponyville with Twilight late last night. She wanted to speak with you about the current effects the poision joke is having on you, for some research project she is up to. From what I understand, she has the only antidote in Ponyville and Canterlot, and it will take a month to make more. You had better hurry before Blueblood decides he needs a second detox."
"Thanks again, Luna! This data will prove invaluable to my research into magical disabilities and curses. I will go get the antidote, don't you worry." After Luna learned that Twilight had been bribed into this prank through the promise of scientific data and two first-edition signed biographies of Starswirl the bearded and Clover the Clever, Luna could not get angry at Twilight Sparkle. Clever as always, Nick made sure to keep the fallout from his pranks directed at him, mainly because he knew the royal sisters would never permanently harm him. Still, she became irritated as Twilight took longer than normal, and worried when she started hearing the purple princess's lab being torn apart.
"Twilight, what is the matter? Art thou hurt?" Luna cried out as she barged into the room.
"It's gone! The antidote was here, and now it's gone! All I found was some paper that-" she gasped as Luna nearly ripped the paper in question out of her magic. Written on it were the words,
"I.O.U. one antidote. -Nick"
Luna nearly collapsed to the floor as she lamented the situation. "Why would Nicholas do this? A prank is a prank, to be sure, but we cannot leave our moon blue for a month! And yet he takes the only antidote in Ponyville and Canterlot anyway. Why?"
Twilight thought for a minute, then realized something. "It's not like him to pull a prank he can't undo at a moment's notice. What about the antidote stash in the everfree?"
"The what?"
"To help a friend gives me much pleasure, especially the princess whose night I do treasure," Zecora answered upon learning of Luna's predicament. Luna had been shocked to learn of a zebra apothecary living in the everfree forest, but had quickly grown to like the rhyming shaman. Potionmakers at Zecora's level of skill were rare in the time before Luna's banishment, and were so unheard of today she had thought it was a lost art. Instead, as she soaked in the antidote and watched the color drain from her moon, she had met a new friend. As she got out of the bath and bid her new friend farewell, Zecora produced a gift and spoke once more.
"Nick was here, saying your spirits need a lift, so he left with me, for you, a gift."
"A new friend, and an apology gift. Perhaps dear Nicholas will not be spending the night on the moon after all." As she opened the lid, a massive banana cream pie launched out and ruined her coat and mane. Fuming mad once more, she scowled towards Caterlot, where she bet Nick was hiding. "He will instead be spending the whole week on the moon!"