Chu Lingyue, the second young lady of Qingfeng Mountain Manor, voluntarily takes her elder sister's place in marriage to Mo Xie, the dreaded leader of the Demon Cult, to protect her sister and reclaim the family heirloom, the Iceheart Jade. On their wedding night, she sneaks into his study to steal the jade, but Mo Xie catches her red-handed and confines her to the Demon Cult's headquarters. As they match wits and battle one another, Chu Lingyue gradually discovers the heartbreaking past hidden beneath his cold exterior and the secret spanning two generations behind the Iceheart Jade. Divided by their identities and old grudges, she flees in the middle of the night. Mo Xie abandons everything in the Demon Cult and travels a thousand miles to pursue his wife. Facing a joint pursuit by martial arts fighters, the two stand together through life and death, finally clearing up every misunderstanding and choosing each other.