SHI Xia and her older brother have always relied on each other. When he disappears, she goes looking for him and ends up in a XianXia world. In this unfamiliar place, the smart and adorable genius girl then encounters SHI Dong, her demon lord brother with a sister complex as well as the pure-hearted Taishang Patriarch HOU Chi. Thereafter, she was caught between two brothers, and they were very happy to protect her.