Xander entered the Magic shop ahead of Detective Stein, if the owner turned out to be a Wesen and a violent one at that, he wanted to be between him and the Police Officer. He wasn't optimistic that they'd get out of this without something going wrong.
Merrick Rack turned to greet his customers and his eyes went automatically to the light above the door that would alert him if the customer was a Wesen or a normal human. The light flickered showing a Wesen. He looked at the middle age man and the teenager that entered. The teenager was wearing sunglasses. 'They must both be Wesen since it didn't signal for a normal human.' He thought.
"Merrick Rack?" The Detective asked.
"Yes, that's me."
"I'm Detective Paul Stein of the Sunnydale PD. I'd like to talk to you about the tea and tobacco you've been selling. It's seems at least the tea is jacine, a mold that is poisonous to humans."
"I don't known what you're talking about. It's a chamomile blend of my own making. I don't know what jacine is."
"I think you do." Xander told him. "What kind of Wesen are you? I've never seen anything like you." He took off his sunglasses and let the very strange Wesen see his eyes.
"Grimm." He snarled.
"That's right." Xander answered. Only to find himself being flung telekinetically into the shelf next to him as the Wesen woged. A tea bag exploded in his face.
"Stop!" Stein ordered. "You're under arrest!"
"I don't think so." The strange Wesen blurred toward the Detective and slammed him into the door of the shop. Stein woged himself and grabbed the strange Wesen and the two began to struggle. Xander pushed himself up and brushed at the powered tea covering his face and sneezed.
Faith and Rory were racing for the shop, having heard the crash, Amy on their heels, the three burst into the shop and saw Paul wrestling with the strange Wesen and Xander trying to clear some kind of power from his face. He started sneezing as it got in his nose.
"What kind of Wesen is he?" Faith, like Xander, questioned. "I've never seen anything like him in your books, Rory."
"Neither have I." He answered.
"He's at least half Zauberbiest." Amy told them. "His Magic tastes like our kind of Magic."
"Zauberbiest? The guy version of you?" Faith asked, reaching the Wesen and yanking him away from the Detective.
"Yes, I don't know what else he is, but I know he's at least that." Amy answered.
Faith swore as both she and the Detective were flung away and into the shelves like Xander had been. Amy tried to freeze the strange Wesen but he blurred away from her, dodging the Magic as he went. Rory leaped for him managing to get his hands on him and hung on. He punched hard and the guy bared a mouthful of sharp teeth, hissing at him.
They were so focused on the strange Wesen and trying to subdue him that they didn't notice Xander was having a problem. He'd inhaled a large amount of tea. Tea made from jacine, a mold that was poisonous to normal humans and an addictive drug for Wesen. But Xander was neither a normal human nor a Wesen, he was a Grimm and Grimm react differently from either normal humans or Wesen. His heart rate was skyrocketing and his temperature rising, if he were a normal human he might be on the verge of a heart attack or a stroke. The tea was having another affect as well, in a Wesen it could elevate their mood or make them drowsy, depending on the strength and amount they took. In Xander it was amping up the anger he'd been feeling since he'd learned his best friend had been poisoned by tea his best friend's sister had been tricked into becoming addicted to. He was experiencing the equivalent of 'roid rage.
With a snarl of his own, he turned to the strange Wesen and leaped towards him, himself. Rory was far stronger than a normal human his age would be and had more than thirty years of experience as a Grimm, but like Xander had recently noted, they hadn't really had to deal with dangerous Wesen very often in Sunnydale and this was definitely a dangerous Wesen, which was taking all of Rory's skill and strength to deal with.
And then Xander latched onto the strange Wesen and threw him though the front window of the shop and jumped after him. Rory didn't hesitate, he ran for the front door, the rest behind him. Xander was moving faster than he'd ever seen him move and the strange Wesen was doing its best to counter Xander's attack.
"What's happened to Xander?!" Cordelia demanded, staring as her boyfriend picked the Wesen up and lifted him over his head and threw him several feet through the air and leaped after him, he seemed to have abandoned his skills and was relying on sheer brute force. The strange Wesen was down and bleeding and than to everyone's horror, Xander just collapsed.
They cautiously approached and found both were unconscious. The strange Wesen had resumed his human appearance when he'd gone unconscious.
"We need to take them to the hospital and get them checked out." Paul decided. "I know a Wesen who works there, I'll make sure she's assigned to treat them both. We can claim they may have been exposed to something potentially contagious to keep people away."
"What happened to Xander?!" Cordelia demanded again.
"He had some kind of powder on his face." Faith said. "Maybe that weird ass tea?"
"And being a Grimm, not a Wesen or a normal human, he reacted differently." Rory concluded. "Let's get him to the hospital and make sure he's okay."