A grieving Giovanni feels conflicted about his choices; a flashback shows Won Jeong's ill-fated connection with Van and Goong Tan.
Consumed with guilt and rage, Won Mi-ho commits herself to reviving her dormant powers. Goong Tan is not going to sit by and watch her in peace.
Goong Tan brings the suicide-inducing Geu Seun Sae into the fray; a tragedy fuels Won Mi-ho's guilt and fear; Giovanni, Van, and Butler Jang try to save a horde of possessed students.
Giovanni helps Van get rid of Geu Seun Sae, but Won Mi-ho is still not out of danger; Van puts his life on the line to foil Goong Tan; innocent people bear the brunt of Goong Tan's anger.
Van learns that Mi-ho will vanish if she regains the power, leaving only Wonjeong; Van tries to stop Mi-ho's training to become Wonjeong.
It's finally the day to establish the Barrier; Mi-ho fights a battle against lust demons on her way to the altar; Butler Chang returns; Johan wakes up from a coma.
Kim Nam-gil
Van
Lee Da-hee
Won Mi Ho
Cha Eun-woo
Kang Chan Hyuk/John
Sung-joon
Goong Tan
Lee Hang-na
Won Mi Ho's aunt