该剧改编自尾鱼的小说《七根凶简》。上古时期，陨铁包裹外星来物降临凤子岭，带来七个神秘生物。生物可寄生人体，干扰意识，引人作恶。上古大德与其弟子以神木打造七块木简，将异物引入其中，命名“七根心简”，再以陨铁打造凤凰鸾扣将其封印。历代能人志士继承大德遗志，记载封印心简之法，流传后世。百年前，一犬偶然在凤子岭刨出木简，心简再现人间。二十年间，一宗宗离奇凶案接踵而来，木代、罗韧、炎红砂、一万三和曹严华五个平凡而热血的年轻人因缘际会组成“凤凰小分队”，共同踏上收服凶简的冒险征途。
When a bus explosion kills several innocent people, the team jumps into action. Scola tries to balance fatherhood with the job.
南宋宫中两大阵营，皇后之子大王子赵贵诚（敖嘉年 饰）、及慧妃之子二王子赵贵和（黎诺懿 饰）皆觊觎帝位。负责献计的左右丞相余靖（黎耀祥 饰）和董昭（郑则士 饰）本为世交，亦师亦友，共同辅助贵诚。但余靖父亲余博文（张国强 饰）因功高盖主失言而招来抄家之祸，与弟余清（邓健泓 饰）及妹余晴（唐诗咏 饰）从此失散，弟弟被骗入宫做太监受尽凌辱，妹妹失忆幸得漕帮帮主之女严三娘（田蕊妮 饰）收养，余靖更误以为董昭为一己私利出卖父亲，与董昭反目成仇，不惜投靠大奸臣杨次山（李国麟 饰），杨家辅助贵和，两派势成水火，恶斗不休，展开连番明争暗斗。一场造王之战，连场朝廷杀戮、尔虞我诈、幕幕触目惊心……
Chatfah, the youngest sister of the Bupphachinda family, has just received the largest share of her father's inheritance and is about to be married. However, Chatfah falls from the highest floor of a vacation home to her three older sisters' shocked eyes. When her body disappears, her three sisters—Baibua, Chomphu, and Picha—become suspects in her disappearance. The eldest sister Baibua is composed, wise, and has always sacrificed for her family. The second, Chomphu, is a confident model whose boyfriend Chatfah stole and was engaged to. The third, Putpichaya, is a jewellery designer and the closest to Chatfah. The three search for Chatfah while further tragedy befalls them following their youngest sister's disappearance. When no one else can be trusted, the three sisters must try to trust one another. They move back to their childhood mansion to find out who was behind Chatfah's disappearance, which could very well be one of them.
