Deng Xiaolong (played by Xu Guanying) has been upright and helpful since he was a child. His ambition is to be a good policeman who can eliminate violence and ensure peace of mind when he grows up. Unfortunately, due to God's will, he was rejected by the police station because of his short stature and color blindness. He had no choice but to work as a guard in a security company. Security Supervisor Zhou Shichang...