in order to save his critically ill father, tong xin (played by zhang jin), who violated the clan rules that he would never step out of the shuiyue cave heaven, went to yujian villa to steal blood that could bring back the dead. after a thrilling battle, the two finally stole blood and saved their father with the help of their elder brother tong bo (played by yu bo), and by chance, they brought the thief doudou (played by ada choi) back to the shuiyue cave heaven. but what unexpectedly happened was that xue ruyi did not perform her function, and xue ruyi's accidental breaking and freezing the entire shuiyue cave heaven. before his death, the clan leader tong zhen made tong zhan the clan leader. the few people who escaped from death embarked on the road of searching for a way to rescue him, and unexpectedly met yin tianxue, who had a secret