Synopsis: The story tells that in a small border town with seemingly ordinary but "undercurrents", He Zhonghua, the head of the temporary border checkpoint, called his daughter, who was about to take the college entrance examination, because she was too busy with work and did not have much time to accompany her daughter. He Zhonghua felt very guilty and promised to accompany his daughter in the college entrance examination. After hanging up the phone, He Zhonghua began to work and routine border inspections. Who knew that the person crossing the border this time was a disguised drug lord. The two sides opened fire at the border. He Zhonghua was unfortunately shot and died on the line.