- Title: 대군 / Daegun
- Genre: Historical, romance, melodrama
- Episodes: 20
- Broadcast network: TV Chosun
- Broadcast period: 2018-Mar-03 to 2018-???-??
- Air time: Saturday 22:50 (2 episodes back-to-back)
- Original Soundtrack: Grand Prince OST
Lee Kang (Joo Sang Wook) is an ambitious prince. He falls in love with Sung Ja-Hyun (Jin Se Yun). She is a beautiful woman from a prestigious family, but Lee Kang's younger brother Lee Hwi (Yoon Shi Yoon) also loves her. To have Ja-Hyun, Lee Kang wants to become the King ... even if he has to kill his younger brother.
- Main Cast
- Supporting Cast
- Ryu Hyo Young as Yoon Na Kyum
- Yoon Seo as Jung Sul Hwa
- Kim Mi Kyung
- Han Jae Suk as Sung Deuk Shik
- Son Ji Hyun as Roo Shi Gae
- Moon Ji In as Kkeut Dan
- Choi Sung Jae (최성재) as Kim Kwan
- Filming began November 2017.