In the human world, she is unlucky. She killed her parents, got into a car accident and came to the underworld. It turns out that she is a princess in the underworld and has an older brother. Because of him, her originally innocent and lovely character became callous and ruthless. What happened to her? He is a member of the darkness, a person who is forever lonely. Because when he met her, the iceberg melted and he was no longer lonely. But why did he give up her? He is also a member of the darkness, but he gives people a very sunny feeling. Is falling in love with her the right choice? . . . . .