
S1·E18 – Episode 18
2018-02-25 • 76 min
As O-gong prepares to sacrifice himself in place of Seon-mi, Devil King Woo, feeling sorry for both, tries to solve the mystery behind the Geumganggo.
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