S1 • E1
A dying woman gives birth to a cursed child; He is rescued and adopted by the general of the kingdom's army, while a group of men tries to kill him. Years later, he goes in search of the monster who is the reason behind the curse, to find someone he had known before.
S1 • E2
Hwal (now Bulgasal) waits for the woman to reincarnate for centuries only to lose her several times to the other demons holding a grudge against his soul. Until 2006, when he finds a fair chance to get his revenge on her, however, it goes incomplete due to a strange twist of fate.
S1 • E3
A hair tie was left behind at the crime scene leads Hwal closer to Sang-un. Sang-un's past catches up to her during a night shift at the laundry.
S1 • E4
Sang-un finally remembers her sister's last words - and how to kill Bulgasal. Ok Eu-tae emerges out of the shadows to destroy an ill-fated soul.
S1 • E5
Sang-un asks Hwal for help in avenging her family's death. Eul-tae tries to persuade the other Bulgasal into joining hands against a common enemy.
S1 • E6
To defeat a greater evil, Sang-un and Hwal agree to keep each other alive for now. Kwon Ho-yeol steps into a hairy case of déjà vu.
S1 • E7
Hwal takes Sang-un to a village to help retrieve memories from her past life. There, a monster tells of Eul-tae's secret in her final gasps of breath.
S1 • E8
Lee Hye-seok's prediction spooks Sang-un into searching for answers about her past. Despite Hwal's warning, Ho-yeol continues to look into Eul-tae.
S1 • E9
Seeing Hwal and Ho-yeol together stirs up a bitter memory for Eul-tae. Nam Do-yun faces a dilemma when a Bulgasal asks him to return the favor.
S1 • E10
Eul-tae invites himself into Hwal's home to look for Sang-un. Do-yun is kidnapped by a reincarnated monster seeking revenge on both Bulgasals.
S1 • E11
Hwal sets out to lock up Eul-tae for good. Trying to protect Sang-un from danger, Si-ho searches for a solution from her sister's past life.
S1 • E12
Rattled by Eul-tae's remarks, Hwal seeks clarity on events that transpired a thousand years ago and how the bad blood started between him and Sang-un.
S1 • E13
Hwal and Sang-un share conflicting memories of the past. Eul-tae channels his anger into a plan to take away everything Hwal cherishes.
S1 • E14
As Hwal vows to do everything in his power to capture Eul-tae, Sang-un reminds him not to lose sight of who he is on his path to revenge.
S1 • E15
To settle the score for good, Hwal, Sang-un and Ho-yeol meet Eul-tae at the well. But one individual has a different plan for revenge in mind.
S1 • E16
The backstory of the Bulgasal from 1000 years ago reveals the origin of the ill fated connection. Sacrifice of Hwal puts an end to the immortal curse
Min Sang-Woon
Dan Sol
Dan Geuk
Nam Do-Yun
Kim Go Bun
Lee Hye Suk
Dan Hwal
Det. Ham