In the near future, the world's first high-intensity PvP retro holographic online game, Skybound Realm, goes live. Using direct neural connection, it is hailed as a “second world.”
Game setting: The ancient Celestial Realm shattered, its fragments becoming continents. The seals on gods and demons are weakening, and the source of all poisons has fallen into the mortal world.
Players can fight monsters for loot, battle other players for their gear, siege cities and claim territory, cultivate and change classes, and awaken talents.
Later, the game and reality merge. Gods and demons from the Celestial Realm invade the real world, and players' powers become humanity's only line of defense.