By the time Mario, Rainbow Dash, Tiff, Kirby, and Galacta Knight EX got back to the castle, night had fallen over Equestria. The five quickly made their way back to the throne room where everyone was waiting. Professor E. Gadd was the first to notice them upon entrance.
"Oh welcome back, how'd it go?" he asked.
"We found the star yes, but that's when Bowser and Dedede appeared and nabbed it from us," answered Mario.
"Oh sweet stars not again Bowser," groaned Peach.
"They really are stubborn aren't they?" asked Celestia.
"Yeah not only that but they even sent a monster after us," said Tiff.
"Oh great which one?" asked Tuff.
"Kracko," answered Galacta Knight EX.
"Kracko?" asked Tuff confused. "But I thought Kirby beat Kracko,"
"It's probably Dark Nightmare," said Pinkie Pie cheerfully.
"Do you at least know where they went?" asked Meta Knight.
"From the looks of it they were heading south east," said Mario.
"What's southeast from Cloudsdale?" asked Yoshi.
"Appleloosa, the place you were when you fought Guyson, the Forbidden Jungle, and the Badlands aka Changeling Kingdom," answered Luna.
"Bowser and Dedede don't seem like the type to visit a place like Appleloosa," said Luigi.
"So then it's either The Forbidden Jungle or the Changeling Kingdom," said Starlight.
"Well wherever they're going, we better make sure that we follow them as soon as possible before they do who knows what," said Tiff. Everyone nodded their heads in agreement. Suddenly the lights randomly began to flicker.
"What the hay?" asked Applejack.
"Sister did you forget to pay the electric bill again?" groaned Luna.
"No I'm sure I paid it," said Celestia. But the moment she said that the lights in the castle died leaving the group in complete darkness.
"Yow!" Spike yelped.
"Eek, I hate the dark," Fluttershy whimpered. The groups conversation was suddenly interrupted when a sinister laughter filled the room.
"Um Pinkie this isn't funny darling," said Rarity.
"That wasn't me," said Pinkie. The sinister laughter once again filled the room as a cold wind swooped past Luna.
"Sister it's not hot in here, there wasn't any reason for you to open the windows," said Luna.
"What are you talking about, the windows are closed," said Celestia confused.
"Then why is there a draft in here?" Luna asked.
"Can we at least get some lights in here?" asked Galacta Knight EX. As soon as she asked that a small purple light appeared next to Luigi.
"Oh thank the stars," said Luigi. He turned to face his friends not noticing the second purple light appear next to the first. "Is everyone here?" asked Luigi. Everyone in the room answered yes.
"Luigi," Fluttershy whimpered.
"What is it?" asked Luigi.
"Behind you," Tuff said nervously.
"What?" asked Luigi That's when he noticed his friends were all staring at him with a terrified look on their face. Confused, Luigi turned around as he came face to face with a large white round ghost with purple eyes and blue tongue. Luigi screamed as he fell backwards. The ghost laughed as blue flames suddenly appeared around the group illuminating the room and revealing the ghost's true identity. "King Boo," Luigi said trembling in fear.
"Hello Luigi, it's been a while," King Boo laughed.
"What do you want?" Luigi yelped.
"One word, REVENGE!" King Boo hissed. He began to laugh as skeletal version of Bowser fell from the ceiling and landed to his right. Standing on his left was a black pony with deep blue eyes that almost resembled Luna. Around the three, Boos hovered around laughing, dry bones emerged from the ground rattling their bones, and several black ponies wearing yellow shades and flowing blue mane and tail were flying around. There was even a small purple creature wearing a skull and held two bones. Around King Boo, the skeletal Bowser, and the black mare were mummified balls with sharp teeth and glowing yellow eyes.
"Eek no, I'm scared!" Fluttershy whimpered.
"Nightmare Moon!?" Luna gasped.
"Hello me, nice to see you again," laughed the mare. "Oh and I brought the Shadow bolts with me, hope you don't mind,"
"Dry Bowser," Mario growled.
"Yeah cause one Bowser wasn't enough," laughed Dry Bowser.
"Even Mumbies and Gabon from Nightmare Enterprises," said Meta Knight. Mumbies hissed as Gabon hit both of it's bones against each other while it rattled.
"How did you know we were here!?" Luigi yelped.
"Bowser and Dedede may be stupid, but they're not THAT stupid," answered Dry Bowser.
"Besides they promised us a big reward if we got rid of you," said Nightmare Moon.
"I hope your ready Luigi, cause it's scare time!" laughed King Boo. "Get them!" King Boo ordered. The Boos, Dry Bones, Shadow Bolts, and Mumbies all charged towards the group laughing and cackling wickedly. Mario quickly pulled out his hammer and whacked a Dry Bones as Yoshi ground pounded a Shadow Bolt. Meta Knight and Galacta Knight EX drew their weapons a swung at the Boos that got too close. Rainbow Dash went head to head with a Shadow Bolt as Applejack and Rarity whacked and bucked at the Dry Bones. The group all did their best to ward off the threat as King Boo, Dry Bowser, and Nightmare Moon watched the battle.
"Heh this is quite entertaining," said Dry Bowser.
"Don't get cocky bonehead, we're not here for a show," hissed Nightmare Moon.
"Will you two shut up!?" hissed king Boo. Suddenly the Boos all yelped as they began to scatter and disappear. "What's going on?" King Boo hissed. That's when he noticed Luigi sucking up the Boos in a red vacuum. "Damn that Luigi and his Poltergust 5000!" King Boo screeched.
"Hey for being ghosts, your Boos sure are cowards," laughed Dry Bowser.
"I would keep my mouth shut if I were you numskull," snickered Nightmare Moon as she pointed to the Dry Bones crawling back into the floor.
"The same goes for you," said King Boo. Nightmare Moon was about to question his logic when she saw her Shadow Bolts flying out the window.
"You useless lot!" Nightmare Moon hissed.
"But hey at least Gabon and the Mumbies are still...." Dry Bowser's statement was cut short when he saw Gabon's bones on the ground and the Mumbies flying around on fire. "I knew I should've kept my mouth shut," said Dry Bowser sounding disappointed.
"Alright we just beat your minions, how about you beat it," said Mario.
"Never, we would never lose to the likes of you," hissed King Boo. Luigi smiled as he raised the Poltergust 5000."You may have won this time, but you won't be so lucky next time!" King Boo hissed as he disappeared. Nightmare Moon sneered as she flew out the window, and Dry Bowser snorted as he jumped out the window.
"Phew," said Luigi slumping down on the floor.
"Well that's enough excitement for one day," said Yoshi. "How about we turn in for the night?" Everyone agreed as they walked out the door.