Jong-gun , an outstanding martial artist, has just completed a confrontation with a group of young men who, overestimating their strength, attempted physical aggression against an adult man. On his way to his car, he was stunned by a sudden sight: his bodyguards were lying unconscious on the ground, and next to them was an unknown subject who was squatting, hiding his identity. The perception was limited only by his back, but the subsequent events caused Jong-gun to be even more surprised and perplexed when the man stood up and turned to face him. To his amazement, he discovered that this person was a young girl...It was you.