What content from gta v story is available in online mode?

The verified Wikipedia evidence describes Grand Theft Auto V's single-player story, which follows three protagonists—Michael De Santa, Franklin Clinton, and Trevor Philips—in their criminal activities within the fictional San Andreas state. However, this evidence does not address GTA Online mode at all, nor does it specify which elements from the single-player campaign appear in the online component of the game. Without additional sources discussing GTA Online's relationship to the single-player narrative, I cannot determine what story content carries over between modes.