"That's my name dude. Don't wear it out." Rainbow Dash said. "And you must be..."
Spider-Tsundere went on her motorcycle, called the spider-wheelz, to follow the Pony of Shadows. "Good idea Isabelle." Principal Celestia said in the communicator. "We can't find that shadow pony himself, but we track the synthetic shadow suit that the creature absorbed."
"Thanks. But please for the last time... Call me Spider-Tsundere." Spider-Tsundere said as she gets off her wheelz and jumped on a truck to a lane that goes the camp Everfree.
"Oops. Sorry. Most of my students like Twilight Sparkle or Rainbow Dash don't have this problem." Principal Celestia said.
"And that's why your students left CHS to go pursue their dreams of becoming superheroes." Spider-Tsundere said.
"Of course we left." A voice said. Spider-Tsundere looked up as she sees a girl flying down. She had on her a beautiful yet radical outfit, complete with pony ears, wings and a long rainbow ponytail. "With magical powers become activated more and more. Who would give up the opportunity to be a superhero."
"Rainbow Dash, I presume?" Spider-Tsundere asked.
"That's my name dude. Don't wear it out." Rainbow Dash said. "And you must be..."
"Spider-Tsundere. Nice to meet you." Spider-Tsundere said as she shakes Rainbow Dash's hand. "How did you find me here?"
"Well I noticed you when you were training with Principal Celestia a while ago." Rainbow Dash said. "But relax, I heard you saying to Celestia that you don't like people know your secret identity."
"Oh... You know who I am then?" Spider-Tsundere asked Rainbow Dash.
"Just what you like, not your name." Rainbow Dash said. "Who are you anyways."
"I won't tell you till you promise never tell anyone." Spider-Tsundere asked.
"Why? My friends and I are superheroes when we pony up and Canterlot City knows we have superpowers." Rainbow Dash said.
"There's a difference between you, your friends and me." Spider-Tsundere said. "Where I come from, if people find out who you are, it will make you an instant easy target for the bad guys. As I told Principal Celestia, you all don't wear masks. And Canterlot City is the most friendliest city in the planet. I have powerful enemies back in Neo-Tech City, and I share my identity to my friends cause I trust them not to blab it to everyone..."
"And what about Celestia? Do you trust her?" Rainbow Dash asked.
"She told me that my secret is safe with her. But just like you, I told her I'm not sharing my identity with the rest of the city." Spider-Tsundere said as she was walking to the woods. "Besides she accidentally saw me transformed into my costume when I wanted to explore the city before I patrol."
"You have to have a reason why you don't want to share your secret Spider-Girl." Rainbow Dash said.
"First off, its Spider-Tsundere, not Spider-Girl." Spider-Tsundere said angrily. "And second I do. But if you want to know. I have an offer. Help me stop this black pony creature, and maybe after, I'll tell you and Principal Celestia why."
Rainbow Dash thinks about it for a moment. "Alright deal!" Both Rainbow Dash and Spider-Tsundere shake hands.
"Celestia, Where did you get that horn?" Spider-Tsundere asked in her communicator. "I know its from Equestria like the others, but where did you get it?"
"3 months ago, me and my sister Luna were on vacation, and we passed by an old science post that was near camp Everfree. They were studying what looks like a dark horn that carries dark magic powers. Later it was destroyed, and the horn was the only thing left." Principal Celestia said. "My guess is the Pony of Shadows is acting like its on a mission."
"Maybe. But for what purpose?" Spider-Tsundere asked.
"I don't know. None of us knows any info about this Pony of Shadows." Spider-Tsundere said.
"Perhaps I know someone who might." Rainbow Dash said. "But you'll have to go to Equestria itself."
"I was afraid of that." Spider-Tsundere said. "But before we do that. Let's stop that shadow horse."
Later...
Spider-Tsundere and Rainbow Dash located the Pony of Shadows in the outskirts of Camp Everfree. At the abandoned science outpost that Celestia was talking about. The Pony of Shadows was digging the dirt to find something.
"There is it. Let's give it a sneak attack it." Rainbow Dash said.
"No Pridey." Spider-Tsundere said as she stop Rainbow Dash. "What is that shadow pony looking." But then spider-sense went off. "Look out." She yelled as she pushed Rainbow Dash away from the incoming tendril.
"I knew you would follow me here little spider, and you brought the element of Loyalty here. But it doesn't matter." The Pony of Shadows said. "The time is now! You will bare witness!" The Pony of Shadows dugged the ground one last time and pulled out a cube and crushed it, revealing a blue gem. "Still intact with unlimited power, it is still ready!"
"No way! Wait, blue gem... The stones..." Rainbow murmured to herself until she remember what Moondancer said years ago. "No way. The space stone!"
"The what?" Spider-Tsundere asked. "That's the space stone?" The Pony of Shadows put the stone into itself and roared in power as he left out a beam of massive energy to the sky! 
It shook the ground surrounding everything. The impact atmosphere of the beam pushed Spider-Tsundere and Rainbow Dash to the dirt ground as they were shock in panic at what's going on. "Celestia... I think the Pony of Shadows left a piece of itself here... Only to destroy our planet!"
To be continued...