He is the king of the world's top killer organization, but he is tired of the bloodshed and chooses to remain anonymous and work as an ordinary courier in the city. He wanted to live peacefully, but due to a mission, he accidentally saved a beautiful CEO who was being hunted. From then on, he was involved in the vortex of the struggle between wealthy families and the underground world. When the enemies of the past are on the lookout, and when all forces are eyeing him, he can only regain his edge, protect the people around him with his arrogance, and once again write a legend belonging to the Supreme in this bustling city.