Tip: You should try the first mission so the lore would make sense

Its 1992 and Carl Johnson just came back home from Liberty City. During the down Fall of the Orange Grove Families and the upcoming new generation of Grove Street Families, San Andreas became a warzone full of gangs. From oddly new and hybrid Families sets to gangs from Liberty City, Vice City, Ohio, Texas, and even around the world came to San Andreas to take up turf.

Carl Johnson immediately goes to his family house and was greeted by OG Big smoke. After their little get together they drove to the cemetery to speak to his brother sweet and his friend Ryder. After they was about to leave, a Ballas car pulled up to them from the Market clique and performed a drive by. The four took off on bikes and little did CJ knew he asked if this was Families turf. Sweet explained to him that the Temple Drive Families split from the Grove.

When Sweet split up and took off to lure the Ballas car away from the group of three another Ballas vehicle as pulled up to take out CJ. The four successfully made it and the three went to sweet house to hang out except for CJ. He went to sleep and he was greeted with a phone call by sweet saying that Grove Street Families is in a major rivalry with The Temple Drive Families and the Seville Blvd Families. Due to them set tripping Ballas and Vagos has expanded their turf from City to City. CJ has came across some newly formed hybrid Families sets and was wondering if their was alignment was with GSF.

The Los Santos Police Department, Las Venturas Police Department, San Fierro Police Department, and the Rural Police Department has over 60+ gangs documented on their San Andreas based gang map. Due to constant spread of gangs being formed and setting up shop due territory expansion, Law enforcement started to do more local foot patrols and more squad cars are now patrolling to suspect any gang activity.

The Ballas sets formed a coalition that brought every Balla set together. Because of this they have more of a variety to weapons to chose from. The Ballas that didn't wanted to be apart of this coalition formed their own sets like the Mad Mafia Ballas and the Backwood Ballas since RHB, TDB, FYB, and KTB are now involved in the alliance. 

The Families became incredibly smaller than before but they have better firepower due to them setting up shop in different Cities like Las Venturas, San Fierro, and even the countryside for more money making opportunities. Even some hybrid Families sets help GSF make even more money which helped GSF to invest more into armory, weapons, and establish better alliances with independent gangs. 

The Cold Side Families became one of the first Families sets to become sanctioned by Grove Street Families. They're recognized and there's times CJ will even help them out in drive bys or just in graffiti by taking up turf with their name.