After transmigrating to "Planet Terra," a parallel world where humanity is weak and spiritual qi is reviving, Wu Qinan finds that people cultivate with spiritual qi to grow stronger, yet still cannot stand against the demonic beasts outside the cities, which are constantly reverting to their ancient forms. As a result, habitable areas keep shrinking, and after more than 300 years, survival has become increasingly perilous. But with his sign-in System, Wu Qinan keeps obtaining cultivation techniques, combat skills, and resources, gradually becoming invincible!
More than 30 years later, after helping humanity become the world's supreme power, Wu Qinan realizes that the greatest threat to Planet Terra isn't the demonic beasts. He'll have to keep signing in if he wants to stay invincible!
