The world of Lu Ren, a top surgeon at Renhe Hospital, collapsed due to a bizarre operation performed by his best friend Zhou Qiang's wife Ye Qian. A routine valve replacement surgery turned into a fatal tragedy due to the mysterious collapse of the sky-high price consumable "Heart Shadow". Lu Ren witnessed the defective batch coding that should have been destroyed, but in the chaos, the hospital quickly "sealed" the evidence and was forcibly suspended.
In order to reveal the truth, Lu Ren sneaked into the hospital's core database alone. With the desperate assistance of the mysterious hacker "Shadow", he dug up bleeding evidence in the cold data cemetery - the problematic batch of "Heart Shadow" was marked as a "research and development test product", and its implantation directly led to Ye Qian's "death from equipment failure"! The records were immediately erased by internal defense systems. On the way to escape, he was ambushed by a professional killer, and Zhou Qiang was also violently taken away. When he was dying, Lu Ren used his flesh and blood as a shield to seize the pathological specimen box that Zhou Qiang desperately passed on, which contained the secret of Ye Qian's heart.
Lu Ren was on the verge of shock in the emergency room with irrefutable evidence of blood staining in his arms. Zhang Yun, the upright head nurse, risked her life to get unknown clues. Before they could take a breather, the joint investigation team of the Municipal Health Supervision Commission was like an iron curtain descending. In the name of "cooperating with the investigation of major security incidents," they demanded that all evidence be immediately sealed and Lu Ren taken away. The shadowless light went out and the black box under the operating table opened. Lu Ren hugged the cold specimen box tightly, as if he were hugging the remains of his comrades, and stood in front of the iron wall woven by power. When the holy land of saving lives and healing the wounded becomes a hunting ground for capital, is the truth worth hitting the Iron Curtain with flesh and blood? The ultimate showdown involving the benevolence of doctors and the dignity of life begins in the bloody dawn.