(The scene starts on a stormy night where Mickey is at home playing a Snow White video game. Pluto is barking at the game in excitement)
Mickey: Look out, Pluto! I'm gonna finish em' off! Take that and that! Catch one of these.
(Dopey [Mickey's player] hits the Witch with his foot but the witch pushes him back)
Minnie: (Comes in and puts her umbrella in the umbrella holder, goes in front of the TV) Mickey, hello! (Pluto barks excitedly) I'm so excited about tonight, aren't you?
Mickey: (Slides to the front of the TV to get pass Minnie) Minnie! You're trying to get me killed?!
Minnie: Hmm, maybe. Oh, Mickey Mouse! You forgot, didn't you?
Mickey: Oh, no. No, no, no. Forgot what?
Minnie: Our anniversary.
Mickey: Oh, yeah! (Laughs) Anniversary. Of what?
Minnie: (Furious) Our very first date! Ooh! Well, from now on, you can date your stupid video game!
(The witch killed Dopey and the game has lost. The TV has been shut off and the lights are turned on by Minnie)
Mickey: Minnie! (Puts the controller down and noticed a newspaper ad showing Miniature Golf, laughs) Fooled ya'! I've got everything planned. You see, I was saving it for a surprise. Ta-da! (Shows Minnie the ad, but Minnie isn't looking and was still mad at Mickey)
Minnie: Hmph!
Mickey: You and me out in the sun, fresh air, blue skys, waterfalls of 18 glorious...
Minnie: (Hugs Mickey) Days in Hawaii! Oh, Mickey! (Mickey noticed the Hawaii trip cost $999.99, which was very expensive) You're so sweet. (Kisses Mickey by the lips) Aloha!
(After Minnie leaves out. Mickey starts to panic)
Mickey: What am I gonna do, Pluto?! (Grabs a pillow from the chair and puts it under him over him) You need moola to hula. Oh! (Feeling depressed)
(Pluto looks at the newspapers, then got an idea, he grabs a paper and shows it to Mickey, it says "Want Ads")
Mickey: Want Ads? (Pluto puts the paper on the floor for Mickey to see) Ooh, ooh, listen to this! "Earn $999.99 for a mindless day's work". Oh boy! I'm back in business!
(Mickey walks to Dr. Frankenollie's house)
Mickey: Well, this is it. 1313 Lobotomy Lane. (A sign reads, "1313 Lobotomy Lane Dr. Frankenollie")
(Mickey whistles to the Steamboat Willie theme while he puts on a blue tie and knocks on the door, and he gets sucked down a trapdoor into Dr. Frankenollie's laboratory)
Mickey: Whoa! (echoes)
(Mickey lands into a chair and gets his arms and legs clamped together)
Mickey: Talk about your ironclad contract.
(Mickey gulps, and yelps when Dr. Frankenollie sees him)
Dr. Frankenollie: Dr. Frankenollie at your service. You're here for the job? Hmm?
Mickey: Yeah—I mean no! Don't!
Dr. Frankenollie: Oh, don't be shy. It's not just a job. It's an adventure!
Mickey: I hate adventure!
Dr. Frankenollie: Perfect. You're hired! Let me introduce your co-worker. I made him myself. (Dr. Frankenollie stretches one of Mickey's ears and releases it like a rubber band)
Mickey: Hey!
(Dr. Frankenollie presses a button and out come smoke and a giant monster resembling Pete pops out, Mickey screams)
Dr. Frankenollie: Ooh, I like it when they squeal.
Mickey: Hey, wait a minute!
(Dr. Frankenolie turns on a camera which shows Mickey wearing a helmet with a lightbulb on one ear and a pressure meter on the other ear)
Mickey: What's going on?!
(The camera zooms into Mickey's brain and analyses it)
Dr. Frankenollie: Aah, perfect. (A pedestal rises up with Dr. Frankenollie on it and hugs the monster's face) Julius! Julius, baby! Daddy's found you a brand new brain!
Mickey: Wait! You're not really gonna—
Dr. Frankenollie: —Put your brain in his body? (The helmet on Dr. Frankenollie's head lightbulb lights up) That's right! (cackles)
(The sky turns red and brain-swapping machine starts up, it zaps Mickey while Julius' smile grows while wearing a pot-like pressure meter on his head and his neck clamped while Dr. Frankenollie continues cackling, with an explosion, the machine breaks)
Mickey: (coughing, feeling dizzy) Oh, I don't feel like myself… (Mickey's eyes widen as the camera zooms out, Mickey realizes he is in Julius' body) Oh my gosh, I’m not myself. (Mickey in Julius' body stretches his cheeks and releases them) That crazy gizmo really worked! Oh doc, doc! Doc, look, I’ve changed my mind. I don't want the money. I want my old body back!
(Mickey grabs Dr. Frankenollie but his body turns into dust, with his bones remaining, Julius now in Mickey's body pops out and growls)
Mickey: Wait, stop!
(Julius in Mickey's body growls and roars and gets closer to Mickey in Julius' body)
Mickey: Uh, you monster, me Mickey. Mickey Mouse. You know, Mickey Mouse?
(Julius in Mickey's body gets confused)
Mickey: Just look in my wallet. You'll see.
(Julius looks in Mickey's wallet, which shows a photo of Mickey from his first appearance in Steamboat Willie)
Mickey: Aw, that's old. (The camera zooms down to Mickey's library card and his social security number, and finally a photo of he and Minnie) There's me, next to my girlfriend Minnie.
Julius: Oh, Minnie.
Mickey: Yeah! And she likes my body and my mind, in the same place that is. (Julius in Mickey's body barks like a dog and climbs up Mickey in Julius' body as Mickey yelps)
Julius: Minnie, Minnie, Minnie! (Mickey in Julius' body screams as Julius in Mickey's body leaps onto his nose and climbs up the wall) MIN-NIIIIIIIIIIIIIE!
Mickey: Stop, thief! Where are you going with my body? We gotta switch back our brains! (echoes)
(Julius in Mickey's body jumps onto the rooftop and nibbles on it until he sees Minnie walking into a sports clothing store called The WetRat)
Julius: Minnie!
(Inside the store, Minnie is shopping for swimsuits for her and Mickey's vacation to Hawaii)
Minnie: (Tossing aside several swimsuits) Hmm, cute suit. Not on my paycheck. (Minnie spots a green girls' swimsuit) Oh my, (giggles) What would Mickey think?
(Julius in Mickey's body slams the doors open and gets close to Minnie as he enters the sports clothing store)
Minnie: Mickey! (giggles) Why, speak of the devil.
(Julius gets even closer to Minnie as she hides the green girls' swimsuit behind her back)
Minnie: Uh-uh-uh! Not 'till we're on the boat.
(Just as Julius in Mickey's body is about to attack Minnie, Mickey in Julius' body shatters the glass doors and into the store and grabs Julius in Mickey's body)
Mickey: Minnie, It's a monster!
(Minnie shrieks as she throws various things at Mickey in Julius' body, including a flipper, a pool noodle, and a crab toy, causing Mickey In Julius' body to let go of Julius in Mickey's body)
Minnie: Come on, Mickey. Let's get out of here!
(Minnie grabs Julius in Mickey's body by the arm as they leave the WetRat store and Mickey and Julius' body stops, looking confused)
Minnie: That was close. (panting) I think we lost him.
Mickey: Minnie!
(Mickey in Julius' body grabs Minnie)
Minnie: Mickey, help!
(Minnie punches Mickey in Julius' body)
Mickey: Stop!
(Minnie screams and continues to punch Mickey in Julius' body)
Mickey: Ow!
(Minnie continues screaming and punching Mickey in Julius' body)
Mickey: Help!
(Minnie once again screams and punches Mickey in Julius' body, Mickey in Julius' body grabs Minnie)
Mickey: Minnie, stop! It's me, Mickey.
(Julius' face briefly morphs into Mickey's face)
Minnie: Mickey?
(Mickey in Julius' body nods and Mickey in Julius' body hijacks a car trying to reach Minnie and Julius in Mickey's body, Mickey and Julius' body sees crane grabber)
Mickey: Hang on!
(Minnie shrieks as she and Mickey in Julius' body reach the rooftop of a building)
Mickey: You'll be safe here.
(Mickey in Julius' body uses the crane grabber to swing from the building's rooftop and going back down onto the road like a zipline)
Minnie: Go get him, Mickey! Rip his ears off!
(Mickey in Julius' body grabs Julius in Mickey's body in his fist as he swings back down onto the road)
Mickey: Yes!
(Julius in Mickey's body releases the claw grabber and Mickey in Julius' body grabs Julius in Mickey's body when they are nearly about to fall)
Julius: Uh oh.
(Mickey in Julius' body and Julius in Mickey's body fall onto a power line and get electrocuted, switching their brains back into their original bodies, they launch back up onto the building's rooftop, Minnie yelps and runs as Julius back in his original body grabs her, Julius, Mickey, and Minnie crash into a billboard featuring an advertisement for Hawaii)
Mickey: (back in his original body, groans, feeling dizzy) Minnie!
Minnie: Mickey? Uh oh.
(Julius' face gets closer to Minnie as she gasps in horror)
Mickey: Hey! Let her go—
(Julius roars at Mickey, as he jumps, ripping the billboard open, Julius cackles at Minnie and Mickey bites his fist, making him scream and throw Mickey away as he screams)
Minnie: Mickey!
(Julius tries to kiss Minnie, but she punches him in the face again, ready to fight, Mickey rises on a pedestal and whistles, holding a pistol)
Mickey: Hey Julius. (Mickey loads up the pistol) Let her go.
(Julius roars as Minnie shrieks as loud as she can, and Mickey screams and flies up and Julius misses when he was about to hit Mickey with his fist, Mickey ties a rope to the moving dancing Hawaiian girl on the billboard's thumb and swings down and ties up Julius and he was about to grab him, Minnie screams as she falls)
Mickey: Minnie!
(Minnie briefly shrieks and stops when Mickey grabs her hand, Mickey and Minnie swing up back to the rooftop and Julius is about to fall, Mickey hugs Minnie)
Minnie: That was close.
(Minnie backs away, hitting Julius' metal peg leg)
Minnie: Oh.
(Julius falls down and gets suspended over the city streets, reeling up and down like a yo-yo as Mickey and Minnie watch from the rooftop, the scene fades to Mickey and Minnie enjoying their Hawaiian vacation, sitting on an inflatable raft and dipping their feet in the water)
Mickey: Happy anniversary, Minnie.
Minnie: (giggles) You're so romantic.
(Minnie kisses Mickey by the lips as they sit on the inflatable raft pulled by Julius as he swims after the photo of Minnie in Mickey's wallet, which is attached to a fishing line)
Julius: Minnie, Minnie, MIN-NIIIIIIIIIIIIIIIIIIIIIIIIIIIE!
(iris out to the and credits, the short ends)