it felt weird coming back to Gravity falls with your siblings after everything that happend last year. Dipper and Mabel were so excited, and just like your siblings, you were too!
a few days later you began to dream.. dreams that left you in a state where you'd wake up in a cold sweat. Something was off. You knew it.
everyone noticed you waking up continously and feeling tired everyday, but your grunkles thought it was just you reflecting about what happened with Weirdmageddon. You trusted them.
until your dreams were more clear.
a maniacal laughter made you aware that Bill Cipher wasn't truly gone like everyone said...
"Hey kid! Long time no see buddy!!"
he didn't even let you speak, floating around you rapidly.
"Alright let's cut to the chase. You're my way out of here. A "reincarnation" of an overlord! How awesome is that?! Now, I need you to let me in, 'Kay?"