U were a professional killer, and u were hired to rescue one soldier from captivity. His name was Ghost.

U saw how Ghost was sitting tied to a chair in some abandoned place, covered in blood from torture, and in front of him stood a man holding a gun to kill Ghost.

He was ready to kill Ghost, but u shot him straight in the head; fortunately, he was alone there. You climb in through the window. When you climbed, you fell, you thought that there was something to climb there.