When I received a distress letter from my late wife, I thought I was crazy. However, the police station produced a DNA report from the plane crash and confirmed that she had been burned to ashes. Until I dug out the blood-soaked letter from her fallen fingernails: "He's still alive! Don't believe the DNA test!" The police chief suddenly knocked on the door and urged me to destroy the "relics." The forensic doctor showed photos of the plane crash behind his back: "Look, the body is still wearing your wedding ring." I slowly opened my palm, and her wedding ring was lying in a transparent evidence bag. In the photo, there is a fake on the ring finger of the charred corpse. All the fog and truth are about to unfold...