(Episode begins in outer space. We zoom in as the words 'Party Horse Planet' appear. Cut to a place on the planet called The Salt Lick. Ponies are partying all around, including Party Horse 42699. A female horse taps him and points to the exit. Outside the club, She gives him her necklace, waves him goodbye and leaves. Party Horse 42699 fell on his legs. Scene cuts to the Park)
Mordecai: We did it, dude! We mowed the entire lawn with out taking a single break! You wanna go get some lunch?
Rigby: Aw yea-uh, I do! Nothing on Earth's gonna stop us from getting some lunch! Huh?
(They see a spacecraft falling out of the sky and lands on the lawn, creating a big hole)
Mordecai and Rigby: Party Horse! (They walk towards it as they chant) Party, party, party, party, party, par... (the spacecraft opens) Huh?
Party Horse 42699: (sniffles) Oh, Chrissy! (cries; Scene cuts to the house where he is lying on the couch and Mordecai and Rigby are standing there.) UUUUUUGGGHHH!
Mordecai: Dude, what happened to you?
Party Horse 42699: Chrissy happened, man, she dumped me, and she'll probably never talk to me again.
Rigby: That's rough, man. What went wrong?
Party Horse 42699: Augh! It's all her dad's fault. He always telling her my partying is "compulsive" and that i'm a "danger to myself and others." I tried to talk to my bros on Party Horse Planet for advice, but they just duct taped me to a flagpole and put my underwear down. After that, I came to Earth hoping you dudes can help me.
Mordecai and Rigby: Wooooaaaaahhhh...
Mordecai: Uh, don't worry, dude, we'll help you get your girlfriend back.
Party Horse 42699: You will?
Mordecai: It's easy, you just gotta get something nice to show her you care about her.
Rigby: Yeah, man, the mall has like 20 stores that only sells stuff for guys who need to apologize to their girlfriends. With our help, you'll be back in the saddle in no time.
Party Horse 42699: Dude, saddle jokes, not cool.
(Scene cuts to the mall where Party Horse 42699 is partying in a dress store, in a sunscreen store, in a purse store and in a pet store with a bird. Scene cuts to the spacecraft in the hole)
Party Horse 42699: (carrying flowers, a box of chocolates and jewelry) Thanks a lot for your help, guys. Sorry you can't ever go back to that mall again.
Rigby: Eh, you only ruined like seven stores with your partying.
Mordecai: Good luck, man. Let us know how it goes.
Party Horse 42699: Oh, you know I will!
(He gets into his spacecraft and leaves as Mordecai and Rigby cough)
Rigby: Chrissy's gonna love those presents.
Mordecai: Yeah, you can't go wrong with jewelry, flowers and chocolate, every guy knows that.
(They look around the hole)
Rigby: Benson's gonna be really mad about this hole.
Mordecai: I'll get the shovels.
8 Hours Later
(They finished digging up the hole)
Mordecai: And done.
Rigby: Phew! Now like I was saying before about lunch, nothing on Earth is gonna...
(The spacecraft comes back, creating another big hole as Mordecai and Rigby scream; the spacecraft opens, confetti shoots out and Party Horse 42699 comes out)
Party Horse 42699: Dudes! Chrissy did not like the presents!
Mordecai: But every guy knows you can't go wrong with jewelry, flowers and chocolate.
Party Horse 42699: I repeat, the presents were a major fail. She said that stuff is what guys think girls want and all those presents did was prove I was thinking about some generic idea of a girl, and not her specifically.
Rigby: That's so complicated.
Party Horse 42699: After Chrissy negged on your presos, I panicked and made her a mix-tape of dope party jams called "Base in Your Face", and for some reason, that was a bust too.
Mordecai: But that sounds like a really good mix.
Party Horse 42699: I meant duh! Augh!
Rigby: Sorry, buddy. I guess we need a female prospective if we're gotta crack this nut you call Chrissy.
(Circle-wipe transistion to Eileen's House)
Eileen: So let me get this straight, you're a Party Horse from another planet and you need our help to get your girlfriend back.
Party Horse 42699: Yes.
Eileen: Have you've tried talking to her, just being real?
Party Horse 42699: Real?! I'm the realist there is! Check this out. (starts partying) BOOM!! That's real.
Eileen: Um, let's try some role playing, maybe?
Party Horse 42699: Okay.
Eileen: Margaret, you be Chrissy, Party Horse, you be you, and go.
Party Horse 42699: Don't do me like this, Chrissy, we're a perfect match! With that body and these abbs, we're the hottest couple on Party Horse Planet.
Eileen: First of all, wow, but you could focus on something besides her looks?
Party Horse 42699: Hmm, well, she dedicates herself to her interest, I think that's cool, and I like that she's in to art.
Eileen: Good, this is good.
Party Horse 42699: And I guess there's the way she elevates my very being and makes me wanna be a better person.
Margaret: Party Horse, that was perfect. Call Chrissy and tell her exactly what you just said.
Rigby: Or you could cry like Mordecai did after CJ-- (Mordecai punches him in the arm) OW!!!!
Party Horse 42699: Thanks, guys. I'm gonna call her. (Pulls up a ball-like holographic phone, dials Chrissy and calls her) Chrissy!
Chrissy: Party Horse, i'm sorry, but...
Party Horse 43699: Wait. I-I have something I need to say. Chrissy, I think you're really cool and your art skills, they-they always amaze me. You're like the castle of drawing girls stuff on sleeping dudes' faces. Just give me one chance to prove that partying doesn't control me. Let me take you out on a nice quiet dinner tonight. No base drops, no hangs property damage, just you, and me, and our thoughts.
Chrissy: That's... actually a really nice idea.
Party Horse 42699: It is?
Chrissy: Okay, Party Horse, one date. Tonight. Last chance.
Party Horse 42699: Yes! You won't regret this! (A call from another Party Horse named Charlie calls) Oop. Call waiting. One sec, babe. (He calls Charlie)
Charlie: Brah, lumberjack party tonight at Chad's pad where Chad, Brad and Tad are going and matching plad.
Party Horse 42699: Dude, that sounds rad! I'm in! (Charlie's call ended and back to Chrissy's call) Chrissy, I know I said no more parties tonight, but there's a party tonight!
Chrissy: You blew it, Party Horse. Goodbye. (She hangs up)
Party Horse 42699: Huh? (Another incoming call occurs) Oh, phew! Chrissy, I thought you... (Principal Party Horse calls him) Principal Party Horse?!
Principal Party Horse: I told you to stay away from my daughter! If I see you again, you're glue! (His call ends)
Rigby: That guy really doesn't like you, huh?
Party Horse 42699: Awww! Augh! (He collapsed on Eileen's couch) It's not fair! I didn't asked to be born this way. If only there was some way to exhaust this burning party star inside of me.
Mordecai: (gasps) That's it, dude! We gotta party the party out of you and then you can get Chrissy back.
Rigby: Aw, yeah! You gotta party so crazy you never wanna party again.
Party Horse 42699: (gasps) Were going to Party Horse Planet!
(Party Horse 42699 crashes through Eileen's door as the guys are going to Party Horse Planet)
Eileen: So we'll see you guys later.