Xu Duanwu, a food delivery rider, unexpectedly wins a ten-million-yuan lottery prize, only to be struck by lightning. By a twist of fate, he becomes bound to a siege-city survival system and is appointed Lord of the Siege City, the hub connecting countless worlds. His livestreamed survival adventure begins. Armed with an absurdly powerful magical bag of treasures and an extraordinary physique, he joins forces with his brother Lei Hu and the aloof powerhouse Mu Qinglan to battle monsters, take on the Abyss Guild, and uncover the truth behind the city's four gates. Overcoming one challenge after another, he reverses his fortunes, resolves the dark-energy crisis threatening the Blue Star, repairs the city, and reconnects countless worlds. Together with his companions, he restores the once-silent hub of all worlds to its former glory and writes his own legendary tale as its lord.