A Frozen Flower

Watch A Frozen Flower drama online English subbed.

 Under the influence of the Yuan Kingdom, the King of Goryeo (Joo Jin-Mo) is pressured to produce a successor to the throne, but the king is in love with his loyal general Hong-Lim (Zo In-Sung). The King then asks his lover Hong-Lim to sleep with the Queen (Song Ji-Hyo), with unexpected consequences.

Sources: Asianwiki, Wikipedia