The Protector

Middle-aged Khamgon, who works as a security guard, is friendly to his neighbors and does everything his wife tells him to. One day, a gunfight breaks out on his way home from buying noodles for his wife. He seems to be able to solve the problem while hiding his extraordinary abilities. However, behind the incident lies a plot to kidnap the president of a neighboring country. In the face of the mission expanding, he can no longer hide his skills.
(Source: bifan.kr)