Liu Sha was a college student, and her life was quite comfortable, until one day she traveled to Europe with some friends, but one of them disappeared during the trip. In desperation, she contacted the aloof brother she met on the plane, but they were inadvertently involved in a series of twists and turns and bizarre incidents. What clues were hidden behind the events? The aloof brother was so flirtatious, and the dramatic stories were slowly unfolding...