Lin Mo took over a seemingly ordinary disappearance case - Zhang Jingyan, a technology company executive, disappeared while driving home late at night, leaving only a note in the car that read "Those who deviate from the track should be reset" and half a fragment of a brass pendulum. During Lin Mo's investigation, he discovered that Zhang Jingyan was secretly developing a new energy technology that could subvert the industry. His former assistant fell mysteriously from a building a week ago and was determined to be a suicide. However, there were traces of cleaning up the scene.
