After repeated failures to become a popular actor, Eun-gu decides to leave for the ocean, to commit suicide in a fashionable way he's always fantasized about. But when he runs into an old friend's wayward sister, his plan begins to fall apart.
Unfortunately the movie Mast is not yet available on HBO Max.
| Directing | Lee Ju-seung | Director |
| Writing | Lee Ju-seung | Screenplay |
| Production | Ju Seung-hwan | Producer |
| Sound | Lee Tae-won | Music |
| Sound | Han Myung-hwan | Sound |
| Sound | Lee Yun-jae | Production Sound Mixer |
