Ji-hyeok, a public defender, was living a hard life looking at his daughter, who was not worth it. Ji-hyeok, who lost his life along with his daughter in a car accident, asks God. “Because I don’t need it!! I just need to see my daughter again!!” After such a persistent request, he arrives in a new world with the power of observation and persuasion, and Ji-hyeok finds out that he is the devil’s butler and lawyer. And he finally comes face to face with the Demon King…. “So Eun-ah…” Surprisingly, the Demon King was in the form of his daughter. The Demon King’s Castle, which was destroyed by the luxury and pleasure of the previous Demon King! Attack of the warriors! The protests of monsters are pouring in every day! Only Ji-hyeok can protect her daughter!