Lu Beichen, a technical operations engineer, is arbitrarily laid off due to workplace prejudice, but he maintains his dignity and leaves gracefully. Having single-handedly kept the company's core systems running, his departure plunges the former employer into paralysis. He eventually returns as a highly paid consultant to put its systems back in order. After joining a new company, he uses his outstanding technical skills and integrity to overcome his rivals' schemes. He then turns his personal experience into an authoritative, open-source industry standard for IT operations, generously empowering numerous businesses and transforming himself from an ordinary employee into an industry leader.