Wang Lei is a core technical specialist at Xingke Technology and leads the development of the company's flagship project, "Mujia Smart Hub." However, Liu Fang, the marketing manager, covets the credit and repeatedly conspires with Project Manager Li to undermine him—taking his workstation, withholding his performance bonuses, spreading rumors, and even maliciously tampering with core code and formatting his work computer. Director Zhang sides with the wrong people, ignoring Wang Lei's contributions and concerns until he is pushed to the brink. Unable to tolerate it any longer, Wang Lei resigns and joins a competing company, where his outstanding technical skills quickly earn him a promotion to technical director. Without its key technical backbone, the "Mujia Smart Hub" project collapses immediately upon launch, with access-control systems failing and payment vulnerabilities occurring repeatedly.