Song Yi, a cargo truck driver, is struggling to raise money for his younger sister's surgery when he unexpectedly awakens a dilapidated Spirit City during a crisis, becoming its new lord. With the help of Xuan Li, the spirit of the city, he unlocks spatial abilities and travels between different otherworldly realms, including the Steam World, the Great Wilderness, the Ghost Realm, and the Apocalypse Star Domain. While conducting interdimensional trade and gathering energy, he builds friendships with allies from all walks of life. As his power grows, Song Yi confronts the forces of Youdu, who seek to control all the worlds. After numerous fierce battles, he combines the powers of past city lords to defeat his formidable enemies and ultimately rises to become the Lord of Ten Thousand Worlds.