He opened his eyes and blinked. The last thing Tails remembered was being shot with that syringe an then… nothing. An odd blurred space in his memories existed; he knew something else had happened, but didn't know what it was. He puzzled over this for a moment before leaping of the couch.
Wait.. LEAPING?! He turned his gaze around and shrieked. Well, actually, it came out as more of "Rrriik!" What he saw was quite clearly the back half of a feral, quadrapedal fox, with two large fluffy tails in place of the standard one.
In his panic, Tails bolted at full speed towards the sliding door, promptly crashing straight into it. This only seemed to agitate him further as he turned and skidded across the floor towards the kitchen table. The two-tailed fox leaped to a chair and then on the table, then crashed through the window. Landing roughly on the moonlit grass, the fox went head over tails and rolled down the hill.
Whimpering slightly, the transformed mobian shakily got to his paws, and tried to actually think. It seemed his mind was somewhat changed as well as his body; Tails' mind was quite muddled. Slowing his breathing, he glanced at the field around him. Spotting the forest about fifty feet away, his new instincts took hold and he dashed away into the night.
Sonic was furious. Unsurprisingly, he was not able to get a mobian doctor at short notice. In his rush, the supersonic didn't even think to call 922, the emergency number for mobians. When a receptionist would tell him to do so, they would find themselves talking to thin air; the blue blur off to another office on hearing the words "I'm sorry, but…"
On the ninth office he tried, Sonic finally lost his cool and just grabbed the doctor; dashing to Tails' with the raccoon in tow. The raccoon was quite nauseous from the experience, and passed out on the grass.
The sight of the broken window immediately made Sonic forget about the unconscious doctor; he almost broke down the door in his rush to get inside. Upon entering the vacant building, the hedgehog's eyes flitted to the knocked over chair, then the scratched table, before resting upon the sofa.
"TAAAAAIILS!!" Sonic screamed, voice reaching an all-time high. He broke down, crumpling upon the linoleum, crying his eyes out.