Yes that is the song from the Zelda Breath of The Wild Commercials.

Song: Believer-Imagine Dragons.

Dipper, who's arms and legs are all tied up, is thrown into a dungeon.

"Hope you don't have plans for the future, because you won't be seeing it in here," said Preston.

Preston locks the door behind him.

"I can't believe they found us," said Dipper.

Dipper then notices a decayed body.

He then screams.

"In gonna die in here," said Dipper.

Meanwhile with Pacifica:

She is in her room in a wedding dress.

"Perfect," said Preston, "Now finish with makeup, the wedding is in a couple hours. Get to know your new husband til then."

Preston then pushes Ronald Hirsch, a boy with pink hair wearing a tuxedo, into the room then leaves.

"So your the girl my parents are forcing me to marry?" Ronald asked.

"Yeah take a look at your beautiful bride," said Pacifica very sarcastically.

"No offence but your not my definition of beautiful," said Ronald.

"Well that's mean," said Pacifica.

"Oh no not because of what you're wearing, its your gender," said Ronald.

Pacifica ask, "Wait are you...."

"Yes I'm gay," said Ronald.

"Oh, then why are you agreeing to this?" Pacifica asked.

"Have you met my family, they forced me into shit like this all the time," said Ronald, "I try to come out all the time but when I do they always get roped in with work."

"You poor kid," said Pacifica.

Just then the window in Pacifica's room breaks open.

"What the heck?" Pacifica asked.

A hook the grips the rim of the window and a retracting sound can be heard.

Then Mabel pops in.

"Grappling Hook!" said Mabel.

"Mabel?" Pacifica asked.

"Who else?" Mabel asked.

"What are you doing here?" Pacifica asked.

Mabel gets into the room.

"First off don't be mad at me for saying this but I had to squeal on you," said Mabel.

"YOU WHAT?"

"Let me finish, he wouldn't let Waddles go, but I got a bone to pick with your dad," said Mabel, "I don't know how but he gave my Pig PTSD."

"Oh god, my dad is known to torture animals," said Pacifica.

"Yeah, and I heard threw Dipper into a dungeon," said Mabel, "First you mess with my pig, and now my brother. That guy will pay."

"I know where the dungeon is," said Pacifica, "Follow me, also how are you not getting googoo eyes for..."

"I have a gaydar," said Mabel.

"Those actually exist?" Ronald asked.

"I had to have it after I found out a guy I used to like was, well, you get the gist of it," said Mabel.

Meanwhile:

Dipper is seen trying to burst out the door.

"Dangit this is useless," said Dipper.

Dipper tries again but to no avail.

"Damn, I'm doing this because you made me believe," said Dipper.

(Song above/ Dipper Singing Below)

First things first
I'ma say all the words inside my head
I'm fired up and tired of the way that things have been, oh-ooh
The way that things have been, oh-ooh

Second thing second
Don't you tell me what you think that I can be
I'm the one at the sail, I'm the master of my sea, oh-ooh
The master of my sea, oh-ooh

I was broken from a young age
Taking my sulking to the masses
Writing my poems for the few
That looked at me, took to me, shook to me, feeling me
Singing from heartache from the pain
Take up my message from the veins
Speaking my lesson from the brain
Seeing the beauty through the...

Pain!
You made me a, you made me a believer, believer
Pain!
You break me down, you build me up, believer, believer
Pain!
Let the bullets fly, oh let them rain
My life, my love, my drive, it came from...
Pain!
You made me a, you made me a believer, believer

Third things third
Send a prayer to the ones up above
All the hate that you've heard has turned your spirit to a dove, oh-ooh
Your spirit up above, oh-ooh

I was choking in the crowd
Building my rain up in the cloud
Falling like ashes to the ground
Hoping my feelings, they would drown
But they never did, ever lived, ebbing and flowing
Inhibited, limited
'Til it broke open and rained down
It rained down, like...

Pain!
You made me a, you made me a believer, believer
Pain!
You break me down, you build me up, believer, believer
Pain!
Let the bullets fly, oh let them rain
My life, my love, my drive, it came from...
Pain!
You made me a, you made me a believer, believer

Last things last
By the grace of the fire and the flames
You're the face of the future, the blood in my veins, oh-ooh
The blood in my veins, oh-ooh
But they never did, ever lived, ebbing and flowing
Inhibited, limited
'Til it broke open and rained down
It rained down, like...

Pain!
You made me a, you made me a believer, believer
Pain!
You break me down, you build me up, believer, believer
Pain!
Let the bullets fly, oh let them rain
My life, my love, my drive, it came from...
Pain!
You made me a, you made me a believer, believer

Dipper runs toward the door.

The door opens up revealing Pacifica, who Dipper runs into.

"Jeez I didn't know you were that excited to see me," said Pacifica.

"Pacifica, what about..."

"He's gay," said Pacifica.

"Okay," said Dipper.

"Come on we got to get out of here," said Pacifica, "I got a plan."

Sorry for sloppy chapter, in having one of my change of weather headaches and its affecting my work ethic so yeah, we're actually getting closer to the end, so be prepared, see you later.