The Pines family's enjoyed years of peace before the first sight of trouble appeared. No one noticed the first tear for a couple of hours as it had appeared in the sky over the Pacific Ocean. It is still a mystery to everyone but the residences of Gravity Falls, the tear is all too familiar to them and they had turned to the Pines family to fix it.
Mabel and Dipper are now adults and the both of them had decided to join their Grunkles at sea. They had to build a bigger boat so they can all fit and named it Pines O' War, which is actually a good thing as the Stan O' War II was badly beaten and Stanley was too stubborn to have it replaced.
They had split in two teams, Stanley and Dipper in one team and Stanford and Mabel in the other. Both teams tried different ways to close the rifts but they only managed to close it for an hour at most before it opened up again. They were running out of time, there are rifts all over the world and nothing they do is stopping them.
After failing to find another way to seal the rifts they met up again in Gravity Falls.
"What are we going to do, Grunkle Ford?" Dipper asked as he paced around the room. "Nothing is working!" He yelled as he pull on his hat in frustration.
"Calm down, Dipper. We'll find a way, there has to be a way." Mabel gently place his hand on Dipper's arm.
"There...there is one method we haven't tried..." Stanford look away as he hold up a picture of Bill Cipher.
"What!? Are you out of your mind, Ford?" Stanley slam his hands on the table as he glare at Stanford.
"This is the only way!" Stanford pinch the bridge of his nose. "Maybe if we had more time to find a way to close the rifts we won't have to resort to this but we're running out of time! Please, you know I won't have suggested this if it isn't our last hope."
"But didn't we erased Bill from Grunkle Stan's mind?" Dipper frowned, not liking the idea but know that Stanford is speaking the truth, they are running out of time.
"Bill is a being of pure energy, it is impossible to kill him permanently. He'll find a way to come back on his own but if we play our cards right and use the right spells we will be able to bind Bill to me." Ford said as he starts taking out spell books.
"Whoa whoa whoa! Hold on there Poindexter, bind him to you? Are you crazy?"
"This is the only way, Lee! With Bill bind to me I will have control over him, he will not be able to use his powers without my permission and he will be tied to me."
"If it's possible you can add this spell." Dipper open one of the spell books to show a spell that forces the person who the spell is used on to obey the caster.
"I've thought of that but I'm not sure if it will work on Bill." Ford run his hand through his hair. "Of course it would be good if it does..."
"We can make it work!" Mabel smiled brightly. "We're the Pines family! If we can beat Bill we can do anything!"
"Mabel's right, we just have to figure everything out." Dipper smiled as he puts the book down. "It won't be easy but we can do it."
Stanley sigh softly. "Can't argue with that." He smiled slightly. "Well we're going to need lots of coffee if we want this done before the world ends." He said as he walk out to make the coffee.