Su Jiu'er, a female constable of the Qian country who is scared of cold, and Han Zheng, the warm young master of the Qi clan, meet because of a strange murder case concerning the relationship between the two clans and form a partnership of two people with a huge warmth difference. They work together to find the truth and dissolve the crisis their families are facing.

Cast: Li Yitong, Bi Wenjun, Chen Heyi, Wang Maolei, Ma Yue, Yang Shize