A nuclear meltdown has occurred where you are working, and now you must take part in attempting to save your local city from the deadly destructive forces of radioactive particles, the cooling tanks are down, the reactor is falling apart, and it seems like there is very little you can do.
With each level you time travel back to an earlier disaster. Good luck.
For real life parallels see: http://en.wikipedia.org/wiki/Fukushima_I_nuclear_accidents
You must get from where you are, to where you need to be, use your environment to get around, but remember, what you are wearing, and what you are carrying can weigh you down, but without them, can get you killed.
See also Levels
For a list of models needed look at AssetList