Bo-hee, a 14 year old boy, was raised by a single mother and has always thought his father had passed away. Bo-hee hears that his father may be alive, and he sets out in search for him with his best friend Nok-yang. He finds his half sister on the way and forms a friendship with her boyfriend.
Unfortunately the movie A Boy and Sungreen is not yet available on HBO Max.
| Directing | Ahn Ju-young | Director |
| Production | Kim Yong-hoon | Executive Producer |
| Writing | Ahn Ju-young | Writer |
| Sound | Lee Ju-noh | Original Music Composer |
| Camera | Lee Seong-yong | Director of Photography |
| Production | So Jun-beum | Producer |
| Directing | Lee Jung-gon | Assistant Director |
| Editing | Lee Hye-min | Colorist |
