Alright, to tell the truth I've always had a bit of a disliking for the Nexo Knights. However, this was a request, and I guess I kind of wanted to write this. So, Sakura Kudo, this is for you!
"No! We're not looking in Sensei Wu's closet again!" Kai yelled.
"Come on! What could happen?" Nya asked.
"Well, we could find something even crazier than fruit chopping blades, enchanted mirrors, poisoned apples and Pokeballs!" Jay cried.
"I actually think this could be a very educational opportunity. Maybe we could take one more look." Zane said.
"Says the Ice Prince himself!" Lloyd said.
"Hey, that was the mirror's fault. How was I supposed to know that would happen?" Zane said, "Besides, Jay was the one who broke it!"
"Enough, guys! To settle this dispute, let's just look in the stupid closet!" Cole yelled.
Kai, Jay and Lloyd groaned, but didn't protest. Together, the six ninja made their way towards Sensei Wu's closet again.
Slowly, Nya opened the door to the closet. A whole bunch of stuff fell out, and the ninja gasped.
"Whoa! What the heck are these?" Kai exclaimed. He picked up a golden ball. Suddenly, delicate wings sprouted out of the ball's back and it flew away before Kai could grab it again.
"The relics in this closet are quite extraordinary." Zane said, studying a glass slipper he found, "It's a wonder how Sensei Wu found all these."
Jay cleared out all the things and was startled to find a enormous hole in the bottom of the closet. he looked into it, but it seemed to be infinitely deep.
"Okay guys, there's a hole in the bottom of the closet. Be careful, I think it never ends." Jay said.
All the ninja crowded around the hole and looked inside.
"Where do you think it leads?" Nya asked.
"I don't know, but maybe we should back up. We're so close to the hole, one push could make us fall in." Lloyd said.
At that moment, the ninja felt two hands on their backs. Before they could respond they were shoved forwards. They fell in the hole! They screamed as they fell further and further into the hole and finally disappeared.
Sensei Wu and Misako stood at the edge of the hole. They had pushed the ninja in.
"Wu, I still don't know why we did that." Misako said.
"My pupils have not been faced with a large problem ever since the mirror incident. I thought it was time for them to have another adventure." Sensei Wu said.
...
Jay slowly opened his eyes and saw the sky. He groaned and sat up, unknowingly waking up Kai.
"Oh my god...what happened?" Kai asked.
"I believe that we were pushed into the hole." Zane said.
"Lloyd! You jinxed us!" Cole groaned.
"Sorry! I didn't mean for that to happen!" Lloyd exclaimed.
Nya was the only one whom was a bit more than worried about their surroundings.
"Guys? Where are we?" Nya asked.
It was only when Nya said that when the ninja realised that they were not in the dojo anymore. Instead, they were in the middle of some kind of arena. Crowds of fans cheered in the seats surrounding them, and there was a bright blue dome over the whole arena.
"What is this place?" Lloyd asked. All the ninja stood up and looked around. Cole groaned as he saw the exit get blocked by iron bars.
Over the balcony, Clay looked at the ninja in wonder. He was surprised at how much the six people reminded him of his own group.
"Hey, Clay. Watching another fight, eh?" Lance said.
"I don't know why we must do these things. Why don't we just let them go?" Macy said, walking up to Clay.
"No way. They must prove their strength!" Lance said.
"If they have any. If not, they'll be torn apart like Axl's chicken burger!" Aaron said.
"Hey!" Axl exclaimed angrily.
King Halbert walked up to the edge of the balcony.
"Comrades, today we test the strength and might of our newcomers in our very own arena! This challenge will determine whether they are fit to become knights!" King Halbert announced. The crowd cheered louder.
"Hang on, test our strength? Challenge? Am I the only who's getting a bad feeling?" Kai said.
"Well, down there we have a girl, three boys, a...hologram, and...why, one of the servant bots! How strange this world is!" King Halbert exclaimed.
"I'm not a hologram! I'm a ghost!" Cole yelled.
"And I think it is rather insulting that I am referred to as a servant." Zane said.
"Let the test begin!" King Halbert yelled.
As the king said that, the gates opened. All the audiences gasped and screamed when a sinister looking jester walked out, holding a book.
"Jestro! How did he get in?" Clay exclaimed.
"This is impossible! The robots should have come out and challenged the strangers!" King Halbert exclaimed.
"Guys? Who's the freak show in the jester costume?" Cole asked.
"I don't know, and I don't want to find out!" Jay exclaimed.
Zane looked closely at the book, and was shocked to see that it had a face. Stranger still, it seemed to be talking to the jester. Suddenly, fiery globlins and scurriers popped into existence, grinning.
"Kill the newcomers and destroy the arena! The audience wanted a show, and they'll get a show!" Jestro laughed.
The globlins and scurriers ran towards the ninja and attacked. In a matter of seconds, a full war was raging on the battlefield. The ninja were outnumbered, and they were losing.
"Guys, I can't believe I'm about to say this, but this may be the end." Kai said, mid-Spinjitsu.
Nya had been pinned down by a demon that, for some reason, reminded her of Nadakhann.
"Witness the might of General Magmar!" the demon exclaimed. He was about to strike Nya with his sword when Lance blocked the blow with his lance. Clay came and kicked General Magmar in the gut, sending him flying.
"Hey, good-looking. I'm Lance. What's your name?" Lance leered.
"I'm Nya, and I have a boyfriend!" Nya grumbled. With that, she kicked Lance in the gut.
"Nya, don't hurt the people trying to help us!" Jay yelled.
"He was trying to hit on me!" Nya yelled.
"In that case, hurt him all you want." Kai yelled.
A scurrier was sneaking up on Clay, but Zane froze it to the spot. Clay whipped around and saw Zane.
"Thank you, stranger. I'm Clay. You must be one of the servant bots. What are you doing out here?" Clay asked.
"My name is Zane, and I'm not one of your servant bots. I'm a ninja from Ninjago." Zane said firmly.
"Strange name for a country." Macy asked, running up to the two and striking a globlin in the head.
"I believe that we have travelled here from a different dimension, not a ." Zane said.
With the powers of the Nexo Knights and the ninja combined, Jestro yelled for all his forces to retreat. The globlins and scurriers stopped fighting and ran after Jestro. Despite their efforts to stop them, the demons and Jestro vanished.
...
"Thank you, ninja. We greatly appreciate you helping us." Clay said.
"We should thank you! We were almost killed!" Jay exclaimed.
Suddenly, an orange hologram appeared.
"Merlok!" Aaron exclaimed, "What are you doing here?"
"It appears that our companions have been transported here from a different dimension." Merlok said, "If I could know the name of their home I could send them on their way."
"We're from Ninjago, and we would love to go home right now." Cole said.
"Thank you. Just give me a few seconds." Merlok said.
Merlok waved his holographic staff a few times and a huge hole appeared in front of them.
"Thank goodness!" Jay sighed, "Alright guys, let's go back to Ninjago!"
Jay cannonballed into the hole, screaming all the way down. Nya looked at Macy and smiled.
"It was nice meeting you. See you next time!" Macy said. Nya nodded and jumped into the hole. Lloyd jumped in, followed by Cole and Kai. Zane was about to jump in when Lance grabbed him by the collar.
"Not so fast. You need to stay here. After that attack, we're missing a few robots!" Lance said.
This proved too much for Zane, and he punched Lance in the face with all his might. He hit the ground with a loud thud.
With that, Zane gave Clay a thumbs up and jumped into the hole. After Zane was gone, the hole closed up.
"Lance..." Clay groaned.
"What did I do wrong?" Lance asked.
...
Sensei Wu anxiously looked into the hole. Misako paced up and down, sighing.
"I told you we shouldn't have done this. What if they never make it back?" Misako asked.
"They will. They aren't ones to give up." Sensei Wu said. He leaned into the hole to see if the ninja had somehow gotten stuck.
Suddenly, a huge mass of blue, red, black, green and silver shot out of the hole, hitting Sensei Wu in the face and landing behind him. Sensei Wu yelped and tried to keep his balance, but failed and fell into the hole, screaming.
"Thank goodness you're back!" Misako sighed, running up to the pile of groaning ninja.
"You're telling us!" Jay griped.
"Umm...what happened to Sensei?' Lloyd asked.
The six ninja and Misako leaned into the hole.
"Where did he go?" Cole asked.
...
Sensei Wu fell out of the other side of the hole. The Nexo Knights turned around and saw Sensei Wu sit up in front of the closing hole, rubbing his head and adjusting his straw hat.
"Another one?" Lance groaned.
About the robot thing, the robots in Nexo Knights are used like training dummies and servants (well, at least Lance treats them like that), and I can imagine how Zane would react: by giving Lance a big punch in the face. I never liked Lance anyway. See you all next time!