Chen Yuan, an ordinary company employee, accidentally bought a diamond-shaped bronze mirror from the 1930s at a flea market. From then on, he would dream of a sad and sad woman wearing a cheongsam every night. On the seventh night, she clearly said to him in her dream: "There are still seven days."
When he woke up the next day, Chen Yuan found a line of small letters written in blood in the mirror: "On the first day, pay off the debt." His life then fell into a weird track: the familiar city became unfamiliar, and people around him showed strange smiles one after another, repeating the same sentence: "The time has come." He must uncover the truth about the blood debt spanning two lives during the seven-day and night countdown to death. And is the "her" in the mirror pressing closer and closer, a creditor who is ruthlessly demanding his life, or is he the long-forgotten... Love from his previous life?
