Jeon Jungkook hates the girl who left him three years ago. Little did he know that she was carrying his own son when she left. Three years passed by and now Jeon Daejung want to know who's his father is. "O-omma! Dae wa-wants Ap-appa!" And what if Jungkook is the only savior for his son which he never knows existed.

Imagine your boyfriend Jimin away on a trip to Busan, while you spend an entire day with your best childhood friend, Jungkook, at your favorite amusement park...only to discover that he sees you as more than just a friend. Who would you choose: Jimin or Jungkook?