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.
as Sim Chung / Se-hwa
as Heo Joon-jae / Kim Dam-ryung
as Cha Si-a
as Jo Nam-doo / Park Moo
as Tae-o
as Kang Seo-hee
as Ma Dae-young / Mr. Yang
as Ahn Jin-joo
as Heo Gil-joong
as Mo Yoo-ran
as Heo Chi-hyun
as Hong Dong-pyo
as Min-ji
as Young Sim Chung
as Young Heo Joon-jae
as Young Heo Joon-jae
