With a devastating typhoon set to strike Longfan in 48 hours, forensic expert Qin Ming receives an unexpected visit from his close friend and chess rival, Shi Fang. Claiming responsibility for several past crimes and insisting that multiple cases were wrongly solved, Shi Fang leaves investigators reeling before collapsing into a coma. As Qin Ming follows the clues left behind, he finds himself trapped in a dangerous battle of wits against a man who may still be several moves ahead.