This mission is based on an alternate universe in which CJ and Tempenny must stop a deal between the Groves and the Ballas, who took advantage of Sweet's arrest to join and thus form the most powerful gang in Los Santos. If this happens, Tempenny knows they will end the C.R.A.S.H, so she convinces CJ to foil the deal. I hope you have fun, it is a simple but entertaining mission. You can see the mission in: https://www.youtube.com/watch?v=Xfoh4SQBMN0