Battle with Dr Finklestein and Screenslaved Isabel and Cobby

[Jack and Garfield reach the top of the building where they find Dr. Finkelstein looking at the view]
Jack Skellington: Dr. Finkelstein! Why are you doing this?
Dr. Finkelstein: Ah, Jack. I see you and Garfield managed to make it here.
[He turns around to face them] You've been busy, Jack and Garfield. I think it's time for you to rest.
[His head opens, revealing a green brain with creepy orange eyes inside. Jack and Garfield gasp]
Garfield: Oogie switched your brain!
Dr. Finkelstein: Shall we begin? I think you'll like this device. I made it especially for you!
[The machine in front of him sparks. Claws and guns descend from the ceiling and spin before retracting. Jack and Garfield see the Doctor's real brain on a trolley near by]
Jack Skellington: We have to switch the Doctor's real brain back to save him.
Garfield: Let's see. If we open his head from behind, then get in front of him, and throw the his real brain in..... Yes! That should work!
[Dr. Finkelstein's song starts playing and a fight ensues]
Dr. Finkelstein: This town has changed, my friends-
Since Garfield and Jack's been away~
Without a WereCat and Pumpkin King, it's Oogie Boogie Jinx's way.~
Jack Skellington: Doctor, please!~
Oh, can't you see you're wrong?~
Dr. Finkelstein: You WERE the king, but now you're nothing but prey~
Oogie Boogie and Jinx are back and they're planning to stay!~
Garfield: It's a crazy web you're weaving~
Oogie Boogie and Jinx will soon be leaving.~
Jack Skellington: Doctor, please!~
It's not too late.~
Dr. Finkelstein: All my machines will seal your fate!~
My lasers will slice you both,~
My knives will cut deep~
And when it's all over~
Pomni and Sally, they will weep~
The days of your good natured mayhem are through!~
I'll tear up this town and I'm starting with you!~
Well, now my friend, it seems you lost your crown!~
In a few mere moments, you'll all be 6 feet in the ground!~
Jack Skellington: Stop at once! Can't you see this is absurd?~
Dr. Finkelstein: No more tricks, your friends are now your foes.~
And now this dance is nearing its close.~
Garfield: All these people that you're hurting
Oh, good doctor, it's disconcerting~
Doctor, please! Your thinking is all wrong!~
Dr. Finkelstein: In a moment finally you'll be gone!~
Garfield: Your intentions are evil!
Your thoughts are all bad!
The thing that you work for
Is no more than a cad!~
Jack Skeleton: When finally we get that foul brain out of you
You'll see no more foe, but a friend that is true!~
[Dr Finkelstein grabs his head, groaning. Dr Finklestein's head shuts. The St. Patrick's Day Door appears in a flash of light.]
[Dr. Finkelstein rolls up to Jack and the Gang]
Dr. Finkelstein: I'm sorry, Jack, and Garfield. I never imagined my brain would be replaced and the town deceived...
Jack Skellington: [shows him the holiday door] Doctor, the St. Patrick's Day Door...
Dr. Finkelstein: [sees the St. Patrick's Day Door] Indeed, that is a Holiday Door. Hmm. [gasps] Jack, Garfield! what's today's date?
Jack Skellington: Why, today is... December 24th!
Garfield: [realizes] Oh, no! It's almost Christmas!
Dr. Finkelstein: I wonder what's happening with the Christmas Door. Let's hope we can find it soon.
Garfield: We need to go back to the Pumpkin Patch. But it won't be easy, because Oogie and Jinx's monsters have possessed the pumpkins at the entrance, blocking anyone from entering.
Dr. Finkelstein: Mmm. [gasps] I know! We'll scare those monsters out of the pumpkins. Give me just a moment.
[The Doctor trundles away. Sally and Pomni arrives, a present in hand]
Pomni: Is the doctor himself again?
Garfield: Yes! He's making a device to help us defeat Oogie and Jinx's army.
Sally: Jack, do you think this might be helpful, too? [Hands Jack and Garfield the Present]
Jack Skellington: [opens the present] What's this?
[The present disappears and in a swirl of snowflakes, Jack and Garfield turns into their Santa Jack form]
Garfield: It's Sandy's costume!
[Dr. Finkelstein comes back]
Dr. Finkelstein: Oh, that outfit really suits you! I've completed the scare device! If I told you what's in it though, that would ruin the surprise! Hide this in your Sandy bag and use it to stun Oogie and Jinx's monsters!