If you get confused, just remember, when I say Bill I mean the good human, and when I say Cipher I mean the evil demon.
Stan was sitting in on the couch watching TV when Mabel walked in. The sun had set a while ago and she couldn't find Dipper or Bill.
"Grunkle Stan, have you seen the boys, I can't find them anywhere. And Dipper isn't picking up his phone," Mabel said. She was holding her pig who was content to nuzzle her chest.
"Nope, haven't seen them," Stan said not taking his eyes off the TV. "Hey, look at this." There was an emergency news report.
"We interrupt this program for a special news warning. It seems Gideon Gleeful's abandoned warehouse has mysteriously burst into blue flames." A helicopter shot of the building showed that it indeed was blue fire.
Ford bolted into the room, "Did the radio say blue fire!" he gasped. The helicopter was getting closer, and could now see a figure walking out of the burning building and heading up into the mountains. If the news woman was still saying anything, the three didn't hear it.
Cipher saw the helicopter flying above him. He grinned with pointed teeth and shot a ball of demon fire at it. It swerved out of the way at the last moment. He threw another this time hitting the base of the propellers. It started smoking and falling out of the sky. Destruction, it was enchanting.
He made his way out of the ruined building and onto a mountain trail. He could hear Bill screaming in his head but he ignored it. He couldn't hurt him without damaging his new body, and he was loving this physical form. He wished it was a little stronger, he could already feel his arms getting weak from carrying Dipper up the mountain trail. But any physical body was better than none.
He didn't really know where he was going, he just need a place to lay low until Pine Tree was fully under his control, after that, he could execute his plan.
After a while, he found a deep cave in the side of a hill. He went a ways in before dropping Dipper on the ground, only checking to make sure there weren't any too big rocks. Cipher sat down, his back against the wall.
'Stop hurting Pine Tree!' Bill screamed in his head.
"Oh shut up," he moaned rubbing his temples, this was going to get annoying.
From the place he fell, Dipper slowly opened his eyes. His whole body hurt, as though something was turning his insides to molten metal. All he could see was a rock wall, but he could hear Cipher talking to himself.
"Oh shut up."
"I'd kill you if I could, but you're a connected to this body, it will take a while to make it mine and mine alone."
"Yes."
"Now stop talking." Dipper realized he was probably talking to Bill. Hope flooded his mind. Bill wasn't dead! He was trapped in his own mind fighting back. There was a chance he could defeat Cipher!
"I wouldn't count on that little tree." Dipper stiffened, he'd forgotten that Cipher could hear his thoughts. He slowly sat up and faced the demon. Dipper couldn't tell what expression the dream demon wore because of his solid black eyes that showed no emotion, but his posture showed he was tired.
Dipper's head hurt and he pressed a hand to his forehead.
"Is something bothering you Little Tree?" Cipher asked, his mouth twisted in amusement.
"Why do you care," he retorted. Cipher cocked his head.
"Only that I want to know how much control of you my probe has gained," he said it calmly, but fear rushed into Dipper's mind. Suddenly, his left hand picked up a stone and tossed it to Cipher with him telling it to.
Cipher caught the stone and looked it over. "Not bad." Dipper knew he wasn't talking about the stone.
"Now let me ask," Cipher grinned. "How do you feel about killing everyone you care about?"
"What!?" Dipper asked, suddenly standing up without wanting to.
"Yeah. I don't know why I bother asking, you are going to do it whether you want to or not." Dipper's hands ignited in blue fire. At first he screamed, but when it didn't hurt, he stopped.
"Get ready, they should be here soon." Dipper stood there, unable to move and not from fear, but because Cipher had complete control over his body. Several long tense minutes passed.
Cipher cocked his head like a dog hearing a distant sound.
"Here they are," he said standing up as Ford, Stan, and Mabel appeared in front of the cave brandishing a strange array of weapons. Stan had bat, Mable held a frying pan and one of Dipper's pocket knives. Ford held a bottle of clear liquid, a cross, and a katana.
'Where the hell did he get that?' Dipper meant to say, but his mouth didn't work.
"Cipher!" Ford growled. "Give the boy back!" Cipher shrugged.
"Sure," he said snapping his fingers.
Fire shot from Dippers hands in an attempt to burn his family to a crisp. Ford jumped in front of the other two and ducked behind his black coat, the one he had worn when he came out of the portal. The demon fire bounced harmlessly off the fabric.
"Stop it Bill!" Mabel begged.
"I am afraid Bill is dead," Cipher lied.
'No he isn't!' Dipper thought furiously.
Ford pulled a small tube out of his coat and in one movement placed a dart into it, aimed, and fired at Cipher. The small dart burned up in a cloud of steam before it even got near Cipher. But the steam drifted over to him, and when he breathed it in, he started choking.
"HOLY WATER?!" he roared, his voice booming in anger. His yellow hair turned to blue fire.
Dipper charged at his sister, who stood dumbfounded.
"Mabel, look out!" Stan leapt in front of her and swung his bat. It hit Dipper in the gut and sent him flying backward into the cave where he didn't get up again.
Cipher roared like an injured beast. His left eye had ceased to be black, it had turned back to Bill's blue eye.
"Dipper!" Bill yelled momentarily taking his body back into control.
"STOP THAT!" Cipher yelled.
"Get out of me! Leave my friends alone!"
Cipher ran at Mabel, this time Ford was there. He splashed the holy water in Cipher's face electing another cry of pain from the demon.
"Get out of me!" Bill yelled, his body erupting in pure white flames that overpowered the demons blue ones. The flames looked almost like a pair of wings.
"Bill," Dipper groaned from the place he had fallen reaching out a hand to his friend. Bill/Cipher looked at Dipper, Bill's eye full of sorrow, Cipher's full of anger.
"I'm sorry Pine Tree," Bill said.
"DON'T YOU DARE!" Cipher roared. Bill spread his arms. The white fire wings started to whirl around him. Cipher screamed in pain, drowning out all other sounds. The light grew too intense to look at.
Silence.
As though the world was morning, no animals made noises in the woods, even the creeks stopped gurgling as loud.
Bill lay in a heap on the floor. His teeth had returned to normal, his hair was fully yellow again. His eyes were closed and he didn't move.
Dipper scrambled over to him and pressed an ear to his chest.
Nothing.
He desperately started pumping on his chest with both hands. He paused and listened.
Nothing.
Tears streamed down his face as he blew into his mouth.
Nothing.
Ford, Stan, and Mabel knelt down a few feet away, tired and sad.
"Bill, don't leave me!" The tears were really coming now as he desperately performed CPR on Bill, trying to get his heart beating again.
"No, you can't," he sobbed pumping his chest. He held Bill's nose closed and breathed air into his lungs once again. "Don't leave me alone. I love you. Do you hear me dammit I love you!"
Nothing…
Writing that last part tore my heart out. Keep a look out for the next chapter and let me know what you think.