One is a rich young lady who looks arrogant and willful but is actually extremely intelligent, and the other is a handsome young master who looks bohemian but actually cares about his country. The daily life of the girl who studied abroad versus the young man who saves the country is full of mutual quarrels and favors. He is a romantic young man in the eyes of outsiders, but he tolerates her, protects her, and dotes on her. Which side of him is the real him? After peeling off the layers of disguise, everyone around her seems to have another identity. Under the fog, who is the real hidden person?