OG Loc

Sweet throws a comeback party at his Ganton house. The Ballas crash it. CJ defends the porch and the perimeter through wave after wave of attackers until the smoke clears.
House Party is a mission in given to protagonist Carl Johnson by Grove Street Families affiliate and aspiring rapper Jeffrey "OG Loc" Cross from his house in Ganton, Los Santos, San Andreas.
The first part of the mission starts at Burger Shot in Marina, and then the actual mission starts afterward. The mission can only be accessed between 20:00 and 6:00.
Carl goes to see OG Loc at Burger Shot in Marina and sees Loc angrily quitting his job as a janitor. As this violates the conditions of his parole, Loc tells Carl that he wants to have a big party before he goes back into prison, as it may be his last chance to "get heard". Loc tells Carl to get ready for the party and then to get some girls. Carl can then optionally get some new clothes and a haircut while waiting for the party to start.
Later that day, Carl gets a call from Loc, who asks Carl if he is coming to the party. Carl tried to get out of it but is persuaded to come over when Loc mentions that his microphone is broken. Carl arrives at Loc's House to find him rapping his mediocre lyrics on a perfectly functioning mic. Carl sees Ryder there, and the pair go outside, away from the obnoxious sound of Loc's terrible music. Carl and Ryder bump into Sweet and other Grove Street members. As they're talking, a Grove Street member rushes in on a bike, warning the gang of an upcoming Ballas attack. The Grove Street gang gets ready to defend their hood by blocking the road with some cars, while Ryder runs off to get more backup.
The Ballas arrive and a massive gang shootout occurs. After getting rid of the first set of Ballas, more Ballas appear on top of the bridge above Grove Street, who are also killed by the GSF. Another set of Ballas appears in the alleyway between Ryder's house and the Johnson House and in Ryder's backyard. More Ballas appear from around the surrounding houses in Grove Street, although Carl, Sweet, and the GSF successfully kill them all.
Upon celebrating their victory, the Grove Street members go back into Loc's house for the rest of the party, with Carl jokingly stating that the party got started when Loc stopped rapping.