Ballerina Jung always wears a mask to hide her facial hairs. Everyone, including her boyfriend Goo-chul, around her recommend her against having a dangerous hair removal surgery yet reluctant to face her without the mask. Eventually she decides to take it. At the very last second in the operation room, she realizes something she's been denying all along that her hairs look good on her.
Unfortunately the movie The Secret Within Her Mask is not yet available on HBO Max.
| Sound | Jeong In-ho | Sound |
| Writing | Roh Deok | Writer |
| Directing | Park Seong-heon | Assistant Director |
| Sound | Lee Seoung-yeop | Sound Mixer |
| Editing | Jung Jin-hee | Editor |
| Art | Song Hye-jin | Production Design |
| Directing | Roh Deok | Director |
| Camera | Kim Mu-yu | Director of Photography |
| Sound | Jang Young-gyu | Original Music Composer |
