In the cyberpunk world built of steel and neon in Newport City, Duan Chen, a slum boy, barely makes a living by repairing old magic devices. On a rainy night, he picked up a mysterious golden scale in a garbage dump and accidentally awakened the "Eye of the Koi" - which can absorb other people's bad luck and turn it into his own good luck.
From then on, the down-on-his-luck maintenance schedule began to turn around. He rescued the down-and-out girl Su Li who was being hunted, only to find that she was actually the real daughter of a top consortium who was living in exile. In order to cover up the truth, the current daughter Lin tide vowed to kill her.
With the increasingly powerful power of koi, Duan Chen started from a dilapidated repair shop, outsmarted black market bullies, and resolved serial crises. His reputation as a "good luck grocery store" gradually increased. Under the guidance of the mysterious master Xuan Lao, he embarked on a journey to find more scale fragments and practice the "Nai Lun Jue", gradually uncovering the ancient secret behind the power of koi.
However, Lin tide's crazy counterattack and more secretive evil threats followed one after another. Duan Chen must protect the people he loves in the jungle of neon and steel, use "good luck" as a blade to pierce the conspiracy and darkness shrouding the city, and fight for a promising future for himself and Su Li.
