In a world where a game has merged with reality, everyone can become a professional player by leveling up through dungeons and bosses. Su Xing, the only hidden class cultivator, enrolls in the country's top academy. However, he can't level up normally and remains a low-level cultivator even after four years. Luckily, he awakens a "Life Simulator" that allows him to simulate his future and bring back his cultivation and items. But his simulations reveal a devastating future: fifteen years later, alien races invade and humanity is destroyed. With this knowledge, Su Xing chooses to cultivate in secret, using the simulator to become a powerful hidden figure to silently fight against the impending invasion.