Most of that can be generated. Do you need it to look as animated and organic as that wast in the film? If you have the $$$, and I mean real world money, and you have experience with 3D Animation software like something as simple as Bryce 6.1 for $109.00 from their website located here http://www.daz3d.com/i.x/software/bryce/-/?,
or a little more freedom and creativity, and prices ranging from but just as useful piece of equipment, Vue 6 Easel download for $89.00, or get the best Vue 6 Extreme for $895.00 located here http://www.e-onsoftware.com/products/vue/vue_6_xstream/.
I currently have access to both programs. These are choices for any serious film maker who really wants to kick their ideas up a few bars than the rest. I know there is the potential that you have already blown $500.00 on the Vision Labs Pro suite (although it shows you've made no purchases as of yet, unless you simply haven't registered) so money may be a little tight for some, but remember, it's your vision, your dream, and you really get what you pay for unless someone comes along that is willing to do all the hard work for nothing...when you find that person, let ME know....LOL. As for your request, I can do some of it, I can make the matte material, but you'll have to add the effects later for the smoke, mist, fog, whatever. Also, if you want camera movements, you'll have to let me know how, or drop me some of your footage raw so I know how long you need the segment to be, and I'll know how to track to the camera, otherwise, let me make your scene, and you can figure out how to green screen your people into it later on. Describe the scene, and I'll see what I can do.
P.S. I'm not above accepting force points for my work.