An overseas operations and maintenance job with a salary of 30,000 yuan turns out to be a death trap in a scam compound in northern Myanmar. Engineer Lin Chen finds himself trapped in a den of devils, forced at gunpoint to repair a online gambling system. Using code as his blade, he lurks in the shadows, intercepting illicit funds, implanting backdoors, and joining forces with the accountant Lao Zhou to steal 300 million in black accounts, matching wits step by step with the boss Wei Tianxiong. When his identity is exposed, he self-destructs the system with a single click, breaks out of prison, flees to the border, and ultimately assists the police in closing the net, tearing apart the entire scam black industry chain with technology.