Here's the first scene of the movie in Olympics Transformers Special.
(In the opening scene, Flain and the other Mixels rushed in to the autobot base)
Flain: We got here as fast as we could, Ratchet.
Ratchet: Good timing Flain.
Burnard: What's happening, Ratchet?
Ratchet: Don't know.
Rokit: Is's the Nixelstorm coming?!
Ratchet: Well, not really.
Niksput: How about Sharptooth?
Vampos: Then what is happening?
Burnard: Gordon does seem to be having trouble with transforming.
Ratchet: He's trying to do his best.
[Gordon tries again but fails]
Gordon: Oh the Indignity.
Flain: What's wrong, Gordon?
Gordon: It's hard.
Vampos: What's hard?
Gordon: The Half-pony form.
Rainbow Dash: Oh, you mean this? [plays her guitar and transforms]
Burnard: Can you transform into robot mode?
Rainbow Dash: Just half pony form.
[Vampos turns to Gordon]
Vampos: Don't worry Gordon, Let's head to the Castle Autobots, so we can't become half pony form.
Sunset Shimmer: They'll help you fix your T-Cog.
Flamzer: Aren't you coming Burnard?
Burnard: No, I'll be fine.
[The Mixels, Sunset and Gordon leave the base]
Burnard: [Sighs] I guess I have write a diary.
[He takes out his book and starts writing]
Burnard: Hey There Thomas, It's me again, We're Finally Beat King Nixel off, even he was tinyest, Also I take down Scar, Frollo and Ratcliffe In Rainbow Rocks crossover, and also I still haven't seen any bad guys, well I hope they come back for more, Sincerely, Burnard.
[Suddenly, a mystery guy shows up and puts his hand into the Spacebridge portal]
Burnard: Hey, what is that?!
[He sees the Mystery guy]
Burnard: Uh, what is he doing?!
[Burnard whistles to the Mystery guy]
[The Mystery Guy turns]
Burnard: Excuse me, what are you doing?!
[The Mystery Guy runs]
Burnard: Never mind, I'll just go.
[Burnard chases the Mystery Guy]
[A groundbridge opens up]
Burnard: Stop, Wait!
[The Mystery Guy runs into the Groundbridge and it closes just before Burnard can jump in]
[But the groundbridge disappears]
[Burnard looks confused]
Burnard: Uh, Hello?
[Burnard cups his chin]
Burnard: (Sighs) Just great!
[The Mystery Guys arrives on the Nemesis, revealing himself to be Orion Pax]
Orion Pax: That was close.
[Soundwave greets him with a wave]
Orion Pax: Hi, Soundwave. I need to return to Crystal Planet.
Soundwave: Okay then.
[The Nemesis heads for Crystal Planet]
Orion Pax: Here it is, our home.
[Orion steps out into the streets]
Orion Pax: Thanks.
Soundwave: You're welcome.
Orion Pax: Now, to get down to business.
[He enters his secret underground lab]
Orion Pax: Let's rock.
[He gets started by looking at some pictures he took from the Battle of the Bands]
Orion Pax: That's interesting.
[Suddenly, a small chirping noise is heard]
Orion Pax: [chuckles] I know that's you, Laserbeak.
Orion Pax: I know you didn't like me going to Cybertron, but I need to find out what is happening on that planet.
Orion Pax: But I am puzzled by one particular finding.
Orion Pax: I found out some information a new living Train-Prime. He calls himself OpThomas Prime.
Orion Pax: Yet, I did not see him back in the days of the war.
[Orion looks up at the readings he's taken]
Orion Pax: There is something strange happening on that planet.
Orion Pax: I just know that I'm going to find out one of these days.
Orion Pax: I must create device that can find the power of the Ponies, engines, Mixels and Autobots.
Orion Pax: I understand, Laserbeak.
Orion Pax: Sssh! Here comes Airachnid!
Airachnid: Hey there.
Orion Pax: Oh, hi, Airachnid.
Airachnid: Going so well?
Orion Pax: Yes. Everything's going great.
[Airachnid leaves the room]
Orion Pax: Okay then.
[Orion starts working on his device]
Orion Pax: Let's rock.
Burnard: Who was that guy?
Flamzer: Orion Pax.
Burnard: Didn't expect to find you here, Flamzer.
Flazmer: I know.
Burnard: Why are you here anyway?
Flamzer: I found that Mystery Guy.
Burnard: What was that Mystery Guy?
Flamzer: Orion Pax.
Burnard: Now I get it.
Flamzer: He had Optimus Prime's features, though.
Flamzer: I even got a photo.
Burnard: What is it?
[Flamzer shows the photo of the Mystery Guy]
Burnard: Oh my.
Flamzer: I know.
Burnard: Could it be, Optimus?
Flamzer: Not sure.
Burnard: Orion Pax.
Burnard: Let's find Orion.
Flamzer: Sure thing.
[They look up Orion Pax on a computer]
Rokit: Okay, now I'm checking out.
Flamzer: It says that Orion Pax was Optimus Prime's pre-war identity.
Niksput: Got it.
Flamzer: And he was given the Matrix of Leadership and turned into a Prime.