Some secrets are meant to stay in the dark . . . Xie Lian is called on duty to the hospital and when he arrives another man is brought in on a stretcher. The man grips on to Xie Lian, muttering to him before the man is brought away. The next day, Xie Lian goes to visit the man; Ming Yi, but he doesn't remember anything, he crashes his car and then everything becomes black. Some days pass by, but Ming Yi's health seems to only go back while the reports show that nothing is wrong with his health, slowly Ming Yi also loses his eyesight and his memories. Xie Lian suspects foul play because of what Ming Yi had said to him before his operation, but no one heeds Xie Lian's call. In the end, Xie Lian decides to go and find the truth on his own with the only lead Ming Yi had given. Xie Lian had to visit a place he would have never gone to on his own, gamblers' den