Genius surgeon Su Yan concealed his identity due to a fatal miscarriage of justice, but was forced to pick up the scalpel again under the stubborn approach of emergency head nurse Wen Zhao. When forensic doctor Zhou Ling's autopsy report, intern doctor Lu Chi's letter of report intertwined with the revenge plot of the patient's family member Chen Man, a medical shady story that had been buried for ten years came to light. Wen Zhao gambled with his life and tore away layers of cover; Su Yan, under the blade, relearned how to save people - not just survive.
Under Wen Zhao's continued influence, Su Yan began to secretly perform surgeries on poor patients, gradually regaining his instinct as a doctor. Lu Chi was suppressed by Lin Zhiyao for reporting illegal medication use, but handed the evidence to Wen Zhao, triggering a purge within the hospital. Zhou Ling anonymously provided a death file from 20 years ago, pointing directly at the systematic tampering of surgical records led by Lin Zhiyao. Chen Man originally planned to poison Su Yan, but after witnessing him sewing up the wounds of a homeless child all night, he left a key - the key to the ward where her daughter was hospitalized. Su Yan opened the dusty medical records and discovered that the 'miscarriage of justice' was actually a scapegoat set up by Lin Zhiyao to cover up bribery by pharmaceutical companies. Wen Zhao was transferred from the emergency department, Lin Zhiyao sent someone to create a "medical accident" to blame Su Yan, and Zhou Ling risked his life to show up to testify. Su Yan revealed evidence in public during a live broadcast surgery, causing an uproar on the entire network, but Wen Zhao was detained for being implicated. Su Yan stood in court holding a knife and no longer wore a mask. The camera swept across the audience: Chen Man was in tears, Lu Chi held up a sign that read, "The truth cannot be concealed," and Zhou Ling nodded slightly behind the crowd. The case is unsolved, but the scalpel is no longer a weapon, but a scale of redemption.
