A secret agent is sent to Sydney, to find and destroy a genetically modified disease called "Chimera".

Mission Commander Swanbeck: Mr. Hunt, this isn't mission difficult, it's mission impossible. "Difficult" should be a walk in the park for you.
Mission Commander Swanbeck: Good morning, Mr. Hunt. Your mission, should you choose to accept it, involves the recovery of a stolen item designated "Chimera." You may select any two team members, but it is essential that the third member of your team be Nyah Nordoff-Hall. She is a civilian, and a highly capable professional thief. You have forty-eight hours to recruit Miss Hall and meet me in Seville to receive your assignment. As always, should any member of your team be caught or killed, the Secretary will disavow all knowledge of your actions. And Mr. Hunt, the next time you go on holiday, please be good enough to let us know where you're going. This message will self-destruct in five seconds.
Ethan Hunt: If I let you know where I'm going, I won't be on holiday.
Billy Baird: You OK, mate?
Luther Stickell: That punk put a hole in my Versace.
Mission Commander Swanbeck: You were under specific instructions to bring back a living sample of the Chimera virus. I'd be very interested to know how, after you'd managed its recovery intact, it subsequently got destroyed.
Ethan Hunt: By fire. That's the best way, really.
[steps in sheep droppings]
Luther Stickell: Shit.
Ethan Hunt: Yes it is.
Sean Ambrose: [disguised as Ethan Hunt] You keep calling me Dimitri. You really shouldn't.
Dr. Nekhorvich: You are not Dimitri?
[Ambrose knocks him out]
Sean Ambrose: No.
Ethan Hunt: She's got no training for this.
Mission Commander Swanbeck: What? To go to bed with a man and lie to him? She's a woman. She's got all the training she needs.
Sean Ambrose: You know, that was the hardest part about having to portray you, grinning like an idiot every fifteen minutes.
Sean Ambrose: You know women, mate. Like monkeys, they are - won't let go of one branch until they've got hold of the next.
Dr. Nekhorvich: You are infected with Chimera, my friend.
Dr. Nekhorvich: [McCloy tries pressing button to gain help] No use, my friend. The medical staff wants no part of this. Doctors don't fancy the idea of dying any more than anybody else.
John C. McCloy: How could I possibly be infected.
Dr. Nekhorvich: That's exactly what Gradski said 27 hours before he died.
John C. McCloy: You've got the antidote, you miserable bastard!
John C. McCloy: You stole Bellerophon! All of it!
Dr. Nekhorvich: My, my, my.
John C. McCloy: I need it! I need it now, you whacked-out Russian Gypsy!
Luther Stickell: The satellite doesn't work as fast as I do.
Ethan Hunt: You turned around.
Nyah Nordoff-Hall: What are you going to do? Spank me?
Dr. Nekhorvich: Every search for a hero must begin with something which every hero requires, a villain.
Dr. Nekhorvich: Well, I've heard...
[takes off mask of Dr. Nekhorvich to reveal Ethan]
Ethan Hunt: ...all I need to hear.
Sean Ambrose: If you look at Hunt's operational history, and I have, you'll notice that he invariably favors misdirection over confrontation.
Ethan Hunt: We've got 19 hours and 57 minutes. I'll get Bellerophon into your system by then. Just stay alive. I'm not going to lose you.
Ethan Hunt: We just rolled up a snowball and tossed it into hell. Now lets see what chance it has.
Sean Ambrose: In just a few hours you can be assured of going down in history as the typhoid Mary of "Aus". G'day.
Hugh Stamp: Why do you think she's really here?
Sean Ambrose: From her point of view or mine?
Hugh Stamp: Well, she wasn't exactly gagging for it when she left you six months ago.
[Nyah is standing right in front of Ethan]
Luther Stickell: [over radio] Ethan, Nyah's in the building. Do you copy?
Ethan Hunt: [dryly, into radio] Thank you.
[Ethan approaches Ambrose with a knife]
Sean Ambrose: Go ahead, Hunt. Use it. It's not a bad way to go. A lot better than the way that bitch is going to die.
Mission Commander Swanbeck: Ms. Hall and Ambrose had a relationship which he took very seriously... she walked away and he's been wanting her back ever since. We believe she's our surest and quickest way of locating him.
Ethan Hunt: And then what?
Mission Commander Swanbeck: Make sure she continues to see him, gets him to confide in her, and report to you.
Ethan Hunt: You made it sound as if I was recruiting her for her skills as a thief.
Mission Commander Swanbeck: Well then I misled you, or you made the wrong assumption. Either way, we are asking her to resume her prior relationship - not do anything she hasn't already done... voluntarily, I might add.
Ethan Hunt: No. She's got no training for this kind of thing.
Mission Commander Swanbeck: What? To go to bed with a man and lie to him? She's a woman - she's got all the training she needs.
[at the races]
Sean Ambrose: Darling, you won!
Nyah Nordoff-Hall: I suppose I did.
Sean Ambrose: What made you pick her? That old nag's never won a thing.
Nyah Nordoff-Hall: [holds up racing form] "A Thief in the Night."
Sean Ambrose: Ha! Say no more.
Ethan Hunt: Clear the bridge for me.
[repeated line]
Sean Ambrose: The ball's in your court, Mr. Hunt.
Sean Ambrose: This is what's known as getting your gun off.
[Ambrose holds up the anti-virus in front of the infected Nyah]
Sean Ambrose: Feel like pleading for your life?
Sean Ambrose: Put a sock in it.
Ethan Hunt: Don't you think we should wait a decent interval?
Nyah Nordoff-Hall: Who wants to be decent?
[last lines]
Ethan Hunt: Let's get lost.
Luther Stickell: That punk put a hole in Versace!
Nyah Nordolf-Hall: You're not gonna shoot me Sean, not this BITCH, cuz she's worth thirty seven, million pounds.
[after Nyah infects herself with Chimera]
Sean Ambrose: You... BITCH!