Sardinia is the mayor's secretary in the movie. He looks like a good man in a straight suit and glasses. When the protagonist kidnapped someone in the hospital, he participated in the command outside and tried to kill people many times. Because he was involved in organ trafficking, he gave the heart belonging to the bug to the rich man's son. He was afraid that it would be exposed, so he wanted to kill the protagonist. Although he finally killed the protagonist, his crime was exposed and he was punished.
The secretary brought him the heart he wanted, only to find the box was empty! There is no heart in it. The heart has been secretly taken away by the mayor to treat the mayor's son. Ironically, it seems that the mayor's son is the son, and it seems that our protagonist's son is not a son at all. The story finally has a real ending. It turned out that the father had matched himself and his son before, and the matching was successful. Finally, the father transplanted his heart to his son and exchanged his sacrifice for his son's hope of survival. This father is unfortunate. He begged everyone not to hesitate to borrow usury to treat their children, but watched the opportunity slip away. Hope suddenly turned into despair, and finally he could only get another glimmer of hope at the cost of his own life.
This film shows the sadness of a nobody. His family is not poor, his wife has a stable income, and he is not so bad as a screenwriter himself, but his family really can't afford such a big burden. Especially in the face of such a huge opponent, you have to fight with your life.