A company hopes to open a spa hotel named after Ieodo, a mythical island inhabited by the souls of drowned sailors. During a study trip to the proposed location of the hotel, a journalist disappears under mysterious circumstances. One of the contractors goes to Ieodo's neighboring island, populated by widows of the dead sailors, to unravel the mystery.
Is Io Island on Netflix? Unfortunately the movie Io Island is not yet available on Netflix.
| Sound | Sang-gi Han | Original Music Composer |
| Writing | Ha Yu-Sang | Writer |
| Directing | Kim Ki-young | Director |
| Editing | Hyeon Dong-chun | Editor |
| Writing | Yi Cheong-jun | Short Story |
| Production | Kim Byeong-ha | Executive Producer |
| Sound | Lee Jae-woong | Sound Recordist |
| Sound | Kim Seok-ho | Sound Effects |
| Production | Lee Woo-Suk | Producer |
| Camera | Jung Il-sung | Director of Photography |
| Art | Lee Myung-soo | Production Design |
| Lighting | Seo Byeong-su | Lighting Director |
