The world is not stable, and there are "empty marks" formed by strong regrets, unsolved mysteries, or disturbances in time and space. They may be cracks in objects, distortions in space, or even gaps in people's memories. The antique shop "Konghenzhai" has been passed down from generation to generation to mend these cracks. However, the act of repairing will disturb the cause and effect, so the repairer will be burdened with "karma" and gradually be "dehumanized" - sensory perversion, memory loss, and emotional stripping.
