At the Beginning, I Contracted with the Demon Lord, and I Became the Favor of the God Clan.

A girl with the bloodline of an ancient god who has been sleeping for thousands of years unexpectedly meets a prince of the demon clan who has been burdened with a blood feud. In the turbulent whirlpool of the three realms of immortals, demons, and humans, they use each other to commit life and death, and finally work together to uncover the ancient mystery and reorganize the order of the three realms.