To raise money for his mother's surgery, Chen Yang takes a night-watch job at an old mansion that pays 1,000 a day. His employer lays down strict rules: no matter what he hears at night, he must never leave his room, and he must never go up to the attic. Mysterious footsteps at midnight, strange noises from a dry well, and unexplained footprints appear one after another. Following the clues, he uncovers long-buried family secrets from twenty years ago. Behind every eerie occurrence lies a father's silent love and lives thrown off course. In the end, old grudges are resolved, and the old house finds warmth and a new beginning.