The plot was diabolical....
*spoilers*
So our hero is busy planting explosives on the gas pipes to blow up the nearby city - We never know why, maybe to kill the infected? And also we never quite know how a few sticks of dynamite can nuke a whole city several miles away... Let's hope Al-Qaeda don't learn this trick!
Anyway, he receives a transmission from a woman trapped in the city but says he won't help her.
With less than 24hrs left till the city blows up a pair of soldiers turn up and convince our hero to go into the city with them to rescue the woman before the city blows up. Why? Because she holds the secret to a cure for the virus... What are the chances of that!
Anyway, one of the two soldiers die on the way in, and the other stays with the body. Our hero manages to find the women and in escaping, just in the nick of time, the remaining soldier turns up to save them both from the creatures...
And now the uber scripting kicks in... The soldier shoots our hero (a number of times), informs us that infact the ONLY reason they wanted to rescue her was - ready for this... sit down now! - to kill her. They like the way the world is now, and don't want things fixed.
So, the woman was trapped in the city, the city was going to blow up in a few hours... No one was going to rescue/save her, so they convince someone to go into to rescue her, risk their lives as well going it to save her, all just to kill her...
Dear God!