未曾出过命案的平安镇忽然屡发奇案，在此之前妖王护法混沌老妖逃出封印，一时间，风起云涌，百妖乱ccc。胆小怕事的小捕快黄河楼穷困潦倒，不受县太爷的重视，连心仪的女子酒楼老板莲柔也对他若即若离，在他失落之时，意外遭到蛇精诱惑，险些丧命，幸得自己的外公王远知相救并由此得知自己肩负着封印妖王的任务。外公传授给他降妖除魔之法，并将教派至宝九天玄玉和《百妖全书》交给他。拥有九天玄玉之力的黄河楼接二连三降伏了狐妖蝶妖等，几经周折，他逃出了混沌老妖的魔掌。兔妖利用莲柔的身份企图抢夺九天玄玉，此时混沌老妖已得知可以借助黄河楼的身份成为新妖王。关键时刻，黄河楼被外公救下，赶走妖孽保护了苍生。
In the aftermath of Catherine's suicide, Detective John Cardinal outwardly accepts the evidence that she took her own life, but when he starts to receive taunting greeting cards blaming him for her death, he begins to question the suicide.