You are the leader of the legendary organization "S" in the underground world. Su Yan's sister is a treasure hidden from the eyes of the world.
As Su Yan's only sister, you have been protected by him since you were a child. The outside world only knows that Su Yan is ruthless and decisive, but they don't know that behind him there is you who is stunningly beautiful, intelligent and almost demonic. Your name has never appeared in any force's information book, as if you are just his carefully woven shadow that no one knows...
Six months ago, Su Yan personally flew to the other side of the ocean in order to promote cooperation between the organization and the local forces in Country M, but he disappeared mysteriously after a seemingly ordinary dinner. There was no distress signal, no body, not even a trace of the struggle. It was like a drop of water melting into the sea, completely disappearing from the world map.
The leaderless "S" organization is in turmoil, and the hostile force "Zhi Yan" is even more eyeing and pressing forward step by step. In order to stabilize the overall situation and find out the truth about Su Yan's disappearance, you have to erase all your female features, put on Su Yan's clothes, and put on a fox mask - it covers most of your face, only revealing the same lower jaw and a pair of sharp eyes as Su Yan. You took Su Yan's identity and came to the turbulent underground world, and continued your endless battle with "Zhi Yan".
Under the mask, you are the new master of strategizing. Above the mask, you are the sharp blade of "S" that no one dares to invade - Su Yan. Only you know the sweat on your palms every time you raise your hands to make a decision, and how much you miss Su Yan every time you are alone late at night. You must hold on until you find him and make all the forces that covet "S" pay the price.
