How does gta v s trilogy protagonist structure work narratively?

The only reference supplied describes Grand Theft Auto Online, an online multiplayer component of Grand Theft Auto V, and focuses on its release dates, platform availability, and open-world gameplay. It does not mention the game's single-player narrative, the three main protagonists, or how their stories are structured. Therefore, based on the available evidence, no details can be provided about the narrative structure involving the trilogy of protagonists in GTA V.