When two princes fall in love with the same woman, they become embroiled in a dangerous battle for the throne and the heart.
Prince Lee Whi (Yoon Shi Yoon) and Sung Ja Hyun (Jin Se Yeon), the beautiful and righteous daughter of a high government official, fall in love with each other. But Lee Whi’s older brother, Prince Lee Kang (Joo Sang Wook), also falls in love with Ja Hyun despite being married to her best friend, Yoon Na Gyeom (Ryu Hyoyoung).
With the king in ill health and an invasion threatening the country, government officials pressure the king to choose a successor. The ambitious Lee Kang will do anything to become the Crown Prince, but the artistic Lee Whi has no interest in the power struggle.
When Lee Whi is sent into battle to prove his worthiness to rule, can he avoid the deadly traps set by Lee Kang and return to the woman he loves?
“Grand Prince” is a 2018 South Korean drama series directed by Kim Jung Min.