I don't own MLP no matter how much I wish I did. Let's get on with this.

Andrew came to a halt at the Music room doors. "This is the spot. I can still feel the magical residue." he said as Sombra came up next to him. Andrew knocked on the door and Applejack was the one t open it.

"Howdy, can Ah help y'all?"

"We were wondering if something strange happened." Sombra said

"Strange how?"

"Strange as in portals popping up in the middle of the room. I can still sense the magic." Andrew replied heatedly.

"Y'all better come in." both did as asked. Andrew knelt where the portal had opened. "That's the spot."

"No kidding. Sombra, take a look at this." Andrew ordered, waving him over. Suddenly, he held out a hand. "Everybody get back!" he snapped, hopping to the nearest wall.

"What's the matter," Rainbow asked, not moving. "its not like the portal is going to open agai..AHH!" no sooner had she said that than the portal opened underneath her feet.

"Poison thread!" Andrew commanded, a thin green thread snapping around the athlete's ankle. With a sharp heave, Andrew hauled her out and the portal closed again. "Next time I say get back, you'd do well to listen." he hissed. Rainbow, too stunned to answer, only nodded. "What do you think?" he asked, turning to Sombra.

"Dark magic, that was Tarturus for sure. The only question is who's opening the portal and why?"

"That's two questions silly." Pinkie said, having forgotten the danger.

"I know that aura. It'll take time but I think I'll be able to remember it eventually." Andrew said. "Keep me posted about these. There's something that's using the competitive green myst to open a portal and release something more dangerous than any of us." with that, Andrew left, Sombra in tow.

...

"So I was right." Twilight said, sitting up in her bed. "There is something going on here. I'm going to find out what it is."

"You'll do nothing of the sort." Andrew snapped, causing Twilight to freeze. "There's something coming and whatever it is, there's going to be a storm coming with it. I can't be worrying about you if this thing comes through." he continued, his voice softening.

"Well, I still want to help." Twilight said, reaching for her bag. "I brought some flux detecting gear from the lab. If we hook each sensor up in specific spots around the school, we might be able to track the source through your laptop." Andrew nodded and took the devices.

"Lightning. Your the faster one, help me set these things up." Andrew called. Lightning looked like she was about to protest, but thought better of ot and did as instructed.

...

Hours later, near time for Twilight and Andrew's roller derby challenge, the array had been set and the laptop given to Sombra. "Keep an eye on them." Andrew ordered. "If there's a disturbance, make sure to have D.D mark it." Sombra nodded and the duo left.

"And the Roller Derby is about to begin, the score being tied at 1 to 1." Discord announced.

"Pinkie and Rainbow Dash are the ones we need to watch out for." Andrew warned. "You have to keep on the outside, I'll cover you." Twilight nodded and took her place.

"Now the ones in the white helmets are the runners. They have to score by passing the other team's blockers. No smashing and we'll have no problems. Are we ready?" cheers could be heard from the stands. "On your mark, get set, GO!" Rainbow and Twilight were neck at neck.

"Too bad for you," Twilight said, "I'm better on skates than on foot." to emphasize her point, she kicked and sped two feet forward, passing both Pinkie and Applejack. Even Andrew was having a hard time keeping up. It took all of two minutes to see who would win.

"And the winners, at 10-8, Crystal Prep." Discord announced.

"Andrew," Sombra came over, holding the laptop, "There was a flux in the gym. We should check it out." Andrew nodded, helped Twilight out of her skates, and dashed to catch up with Sombra.

I know, anticlimactic. More on the way.