John Lemon is an ex-army from San Andreas Civil War in 2009. He used to be the personnel of 101st Army Batallion, which was famous because only 4 personnels were survived the war. After the war ended, he lived peacefully in town of Las Barrancas
2009 was a dark year for San Andreas, but now, 2011, the year become darker than ever. With traitors spread all over San Andreas, crime rate raise dramatically, people died evey day (i think it's usual), and corrupt polices everywhere...
2011, John still live peacefully in Las Barrancas. But a sound of gunshot change his peaceful life forever...
You can see the detail explanation of the storyline in http://www.gtaforums.com/index.php?showtopic=485561
[UPDATE]02 NOVEMBER 2011
Chapter 3 finished ! The file already approved by the moderator
Enjoy the missions !
For chapter 2, I afraid it will be long for the file to confirmed by the moderator team, since they didn't online recently. So I suggest you check my gtaforums page and get the download link for chapter 2 there