How to access story mode from gta online?

Grand Theft Auto Online is the multiplayer component of Grand Theft Auto V, allowing up to thirty players to explore the open world of San Andreas. The game’s design keeps online and single‑player experiences separate. The story mode you play in the single‑player version of GTA V is not integrated into GTA Online, so there is no in‑game option to switch from online to the story narrative while remaining in GTA Online. To experience the story, you must quit online mode, return to the main menu, and start the single‑player campaign of GTA V.