Song Wanzhao, an ordinary office worker, wakes up every day and finds a strange note on the refrigerator: "Don't turn on the bedroom light tonight," "Throw away the balcony plants," "Quit your job immediately." She thought it was her roommate playing a prank until she followed the instructions on the note to dodge a late-night burglary and avoid a suddenly falling billboard, and realized with horror that someone had foreseen all her dangers. And when she finally mustered up the courage to trace the source of the note, she discovered that there was a dried blue rose stuffed in the keyhole of her door, exactly the same as the one her best friend who disappeared ten years ago loved to have in her hair...
