Lu Chen, a genius student in the Department of Computer Science at Jiangcheng University, appears to be a "technical geek" who wins awards and is soft-handed, but secretly he is the mysterious hacker "Cold Blade" on the dark web - he relies on technology to wander in gray areas, just to find out the truth about the mysterious disappearance of his parents three years ago.
In an accident, he hacked into the database of the transnational criminal organization "Bone Erosion" and discovered that the disappearance of his parents was related to "Bone Erosion's" "Ark Project" - a plan that attempted to use new neurotoxins to control important figures around the world and subvert the existing order. And his whereabouts were quickly detected by "Erosion", and killers followed one after another, and Lu Chen's peaceful life was completely broken.
At a critical moment, Qin Lan, an agent of the "Dragon Group" of China's special intelligence department, rescued him and invited him to join the "Dragon Group" using his parents' clues as a guide. With his obsession to find out the truth on one side and his responsibility to protect the world on the other, Lu Chen put on his tactical uniform, picked up the modified smart equipment, and transformed from a "keyboard man" into a "battlefield blade".
From the rainforest strongholds in Southeast Asia to the secret laboratories in the Arctic Circle, from disguised transactions in bustling cities to submarine confrontations in the deep sea, Lu Chen relied on top computer technology and rapidly growing practical capabilities to dismantle the "Bone Erosion" conspiracy time and time again. He met brothers of life and death in a hail of bullets, developed a complex relationship with Qin Lan amidst suspicion and trust, and gradually revealed that there were forces from higher dimensions controlling the "bone erosion" behind it.
When the countdown to the start of the "Ark Project" reaches zero, and when the truth about his parents' life and death emerges, Lu Chen holds the "Cold Blade" in his hand and stands between saving the world and defending the country.
