Extreme Measures movie plot

Surgeon de Lawson is an outstanding and promising young man. One day, a strange patient he was on duty died inexplicably. After examination, it was found that he had been operated on, which caused all the physiological phenomena to be abnormal. When the corpse was further examined, the corpse was missing, and their exploration was blocked by the hospital in many ways. The patient’s files were all secretly deleted, and he himself was framed and fired by the hospital. If the verdict is clear, he will never be able to practice medicine and his future is hopeless. De knows that there must be an ulterior conspiracy going on behind these things. However, he had no clue except for the patient’s special silver bracelet, the “Datang”, “Third Order” and a person named “Du Teddy” that the patient had mentioned before his death. "Datang". This is a homeless settlement that exists underground. Here, he met Du Teddy who was dying. De found that his symptoms were the same as those of the strange patient. After examination, it was found that he had also been subjected to neurosurgery. The assassin who followed him killed Du Taidi and killed him. After De escaped, he asked a friend in the hospital for help, but unexpectedly discovered that this friend was a "Tier 3". However, in his hospital, there are many doctors who serve the "third-tier". De was caught by the "Tier 3" and locked in the ward. De tried every means to escape, and finally got rid of the hunt and met the person in charge, Dr. Mei Li. Dr. Meili told him the truth. They caught healthy people, performed live experiments on them, and achieved important results. De believes that Dr. Meli’s idea is right, but the method is wrong. He violated the doctor’s mandate and committed a crime. At this time, the assassin arrived, and Dr. Meili was shot and killed during the fight.