Walkthrough of the Random Event in Grand Theft Auto V
Once at South Mo Milton Drive in Vinewood Hills, you’ll see bikers kidnapping a girl. Stop a few tens of feet from them and wait until they drag her into a van. After that, shoot one of the van’s wheels.
Bikers will open fire on you. Shoot them and go to the van. The girl will ask you to drop her to Ineseno Road in Chumash.
Along the way, four more bikers will chase you. Eliminate them and deliver the girl to the specified point. After that, the random event completes.
Trevor can take the girl to the Altruist Cult Camp instead. This is a suitable victim if you intend to get the Altruist Minion achievement and participate in the Altruist Camp Shootout.