She is the number one killer in the world, quick and accurate, but she often fails against him. She is enchanting and beautiful on the outside, with infinite scenery, but inside she is lonely, cold and arrogant, which she has never forgotten. He is the captain of the international anti-terrorism force. He is highly skilled and can defeat her without a fight. He is handsome and cold on the outside, but there is always a void in his heart. I don't know why. The memories of his and her status five years ago and five years later have long since changed. Time has passed by like a fleeting time. Can they still regain the beautiful story of the two agents? . .