This film is about a security company's bodyguard, Ye Kai, who is entrusted by medical professor Lin Guohua with the task of protecting Lin Guohua's daughter, Eno, in order to keep his scientific research from falling into the hands of the shady businessman Peter. After experiencing several threats of life and death, they do not give up hope and fight back, and finally overcome the culprit with their firm belief and succeed in preserving Lin's scientific research.