A mermaid from the Joseon period ends up in present-day Seoul, where she crosses paths with a swindler who may have ties to someone from her past.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2016-11-16 | 70 min |
| Season 1 | Episode 2 | Episode 2 | 2016-11-17 | 70 min |
| Season 1 | Episode 3 | Episode 3 | 2016-11-23 | 70 min |
| Season 1 | Episode 4 | Episode 4 | 2016-11-24 | 70 min |
| Season 1 | Episode 5 | Episode 5 | 2016-11-30 | 70 min |
| Season 1 | Episode 6 | Episode 6 | 2016-12-01 | 70 min |
| Season 1 | Episode 7 | Episode 7 | 2016-12-07 | 70 min |
| Season 1 | Episode 8 | Episode 8 | 2016-12-08 | 70 min |
| Season 1 | Episode 9 | Episode 9 | 2016-12-14 | 70 min |
| Season 1 | Episode 10 | Episode 10 | 2016-12-15 | 70 min |
| Season 1 | Episode 11 | Episode 11 | 2016-12-21 | 70 min |
| Season 1 | Episode 12 | Episode 12 | 2016-12-22 | 70 min |
| Season 1 | Episode 13 | Episode 13 | 2016-12-28 | 70 min |
| Season 1 | Episode 14 | Episode 14 | 2017-01-04 | 70 min |
| Season 1 | Episode 15 | Episode 15 | 2017-01-05 | 70 min |
| Season 1 | Episode 16 | Episode 16 | 2017-01-11 | 70 min |
| Season 1 | Episode 17 | Episode 17 | 2017-01-12 | 70 min |
| Season 1 | Episode 18 | Episode 18 | 2017-01-18 | 70 min |
| Season 1 | Episode 19 | Episode 19 | 2017-01-19 | 70 min |
| Season 1 | Episode 20 | Episode 20 | 2017-01-25 | 70 min |
| Directing | Jin Hyuk | Director |
| Writing | Park Ji-eun | Writer |
| Production | Jinnie Choi | Executive Producer |
| Production | Lee Jung-mook | Co-Executive Producer |
