An unknown event awakens everyone on Earth to become Card Masters. The world enters a data-driven mode, and countless secret realms descend upon Blue Star. Countless demons and monsters wreak havoc on the world, and behind these secret realms lie connections to countless other worlds. Card Masters rise to power, wielding extraordinary strength to explore the truth behind these secret realms. The protagonist, Lu Ziye, awakens a god-level talent and discovers the entrance to the "Howling Cave" secret realm in the basement of his own villa. Seizing this great opportunity, he commands spirit beasts, rises rapidly, and traverses various secret realms, seeking the unknown truth behind them.