Desc: Ông Ngoại Tuổi 30: Directed by Kang Hyoung-chul. With Cha Tae-hyun, Park Bo-young, Il-Kwon Ahn, Kim Chae-yeon. A radio DJ/entertainer in his 30s suddenly learns he may be a grandfather, thanks to a young girl who has a baby son and claims to be his daughter.