Young, a careless person, suffers from terminal illness and gets admitted in a hospital for treatment. There, he falls in love with a patient. After recovering, will he get back to his former life
Unfortunately the movie Happiness is not yet available on HBO Max.
| Directing | Hur Jin-ho | Director |
| Writing | Lee Won-sik | Adaptation |
| Writing | Lee Suk-yeon | Screenplay |
| Writing | Shin Joon-ho | Screenplay |
| Writing | Seo Yu-min | Screenplay |
| Writing | Hur Jin-ho | Writer |
| Writing | Kim Hyo-kwan | Screenplay |
| Writing | Lee Jung-hwa | Screenplay |
| Camera | Kim Hyung-koo | Director of Photography |
| Editing | Choi Jae-geun | Editor |
| Production | Lee Eugene | Producer |
| Production | Kim Bo-ram | Line Producer |
| Costume & Make-Up | Kwak Jung-ae | Costume Design |
| Directing | Lee Jung-hwa | Script Supervisor |
| Writing | Lee Jung-hwa | Storyboard |
| Lighting | Jung Young-min | Lighting Director |