This is a promotional film for the police, in which an investigator calls on a priest to appoint a lawyer to free innocent Seo Yeon, who is accused of killing her smuggling husband, from custody.

At the close of the reign of Sin the Great in Goguryeo (B.C.37-A.D.668), royalist Uso is executed by a false incrimination made by a treacherous retainer Yangsin and his sister Jangssi. His daughter becomes a royal concubine of King Nammu, and called Her Majesty Yeonghwa. She revenges herself on the party of Yangsin. After the king passes away, she makes his brother Yeonu accede to the throne and has the whole country under her thumb. But she has no child. When the king begets a son from another woman, she dies of jealousy at last.

His parents captured by the Baekje armies, prince Eo-jin infiltrates the enemy castle alone to seek revenge. His plot is ruined when he falls in love with a princess there and is forced to choose between betraying his parents and nation or the woman he loves.

Based on a story by Nae-seong Kim.