Mu Qianxue and Ji Tingshen were the God of War and the Demon Lord of the Immortal-Demon Realm in their past lives. Due to a misunderstanding, they became mortal enemies, and accidentally came to Earth because of the Nine-Star Alignment. Mu Qianxue and Ji Tingshen had an unexpected flash marriage. Initially, the two couldn't stand each other after marriage, but in the process of getting along bit by bit, they firmly grew to like each other, joined hands to face the risks in marriage, remained loyal to the marriage and to both sides, and jointly guarded their emotional life as husband and wife. Finally, when facing wrongdoers from the same different world, the two spared no effort to protect each other. Evil cannot triumph over righteousness, and the two achieved final victory, happily staying together to live a happy life.