Then when BlackMystery Heard Bill, he saw Bill he was killing people. BlackMystery said"Dipper! Where are you! Bill is here! Dipper said"I know. I'm behind you." BlackMystery said"Come on! Let's kick he's ass." Dipper said"What if i can't? What if everyone dies because of me?" BlackMystery said"Don't think that. We can do this." Dipper said "You're right!"

Then Bill saw the two talking, then Bill said"Huh!! What pathetic! As if you know, no one can beat me!!!!" BlackMystery said"Don't be like that. You don't know that yet!" Then after a few days, Bill brought chaos. But not just in Gravity Falls, but to the whole world!!! BlackMystery and Dipper was getting ready to fight. Then when it was time for Dipper and Bill to fight first, Bill threaten Mable. But Dipper didn't believe him. When Dipper attacked it was nothing to Bill.

Then suddenly Bill stabbed Mable! Mable was bleeding to death then died. Then Dipper raged then turned to his full Demon form. But when Dipper attacked, Bill had a little scratch. Then Bill attacked and knocked out Dipper."

It was Time for BlackMystery to fight. But Bill suddenly got BlackMystery's Parents that adopted him. Then Bill killed them! BlackMystery raged so much he turned to his ultra dark form. When BlackMystery attacked Bill, there was a hole in Bill's chest. Bill said"This is impossible" Then a girl named Shadow Girl came. Shadow Girl is BlackMystery's girlfriend.

After that BlackMystery Felt dizzy, then he was back to his normal form. Then Bill took BlackMystery and stabbed him with an attack. Then BlackMystery faded and "DIED" Then Bill said" You know what i'll give you another 3 years." Then Bill vanished.

3 YEARS LATER

They were getting ready. Then Bill came with a Laughing voice. Dipper said Get ready! Dipper fought with Shadow Girl, to bring vengeance to BlackMystery's death. They fought and fought then Bill got them. Then Bill made a Big Blast to destroy Earth. Then BlackMystery was actually just in space. He still got the chance to regenerate. But he was frozen. So a vision appeared to BlackMystery when he was frozen. It was God and God said"The World needs you child. So i will always keep you alive."

Then when Bill was ready to throw the Blast. BlackMystery opened his eyes and was unfrozen. Then he transformed to his Ultra Dark form and teleported to Earth. Then BlackMystery stopped the Blast and made it explode. Then BlackMystery Fought Bill Until BlackMystery took out Bill's heart and killed Bill.

Bill went to hell But not as a Demon again but as a prisoner. Then Black Mystery came and tortured Bill. Then BlackMystery went back to Earth and the people rejoiced and as if they finally know that Dipper is a good Person. Thats the end of his book i hope u enjoyed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111