S1·E7 – Episode 7
2018-01-20 • 68 min
Devil King Woo seeks Seon-mi's help in dealing with a troublesome prince who refuses to return home until he finds a runaway mermaid.
Cast
Lee Seung-gi
Son O-gong
Cha Seung-won
Devil King Woo / Woo Hwi
Oh Yeon-seo
Jin Seon-mi / Samjang
Lee Hong-gi
Jeo Pal-kye / PK
Jang Kwang
Sa O-jeong / Yun Dae-shik
Lee El
Ms. Ma Ji-young
Lee Se-young
Jung Se-ra / Richie / Zombie / Asanyeo
Kim Seung-o
Lee Han-ju
Sung Hyuk
General Winter / Summer Fairy
Yoon Bo-ra
Alice / Jade Dragon