Season 1

In an unstable state, In Wook returns home and confronts his father for what he had made him and for his mother's death. He then makes his way to Jung Won's house and abducts Ma Ri. When he tells Ma Ri that this is the only way for them to be together with a gun held towards them, Jung Won appears.

After knowing about what Ju Hwan did to the whistleblower, Jin Hee asks So Jin to perform a procedure on Ju Hwan. Later, Jin Hee finds out how Ju Hwan was cruelly crumpled to death. Shocked with fear, Jin Hee immediately looks for So Jin for an explanation. So Jin is calm when Jin Hee questions her about the incident and even questions Jin Hee back if she is satisfied with the result. Jin Hee admits to her involvement in the incident and feels guilty about it, even though Ju Hwan well deserved it. Meanwhile, Chairman Jin is terrified of the strange death, thinking that he could be the next target.

Chairman Jin is in great anxiety due to the fear of getting a procedure performed on him. With the help of Jin Kyung, Chairman Jin does everything he can to prevent the foreseeable death threat from getting to him. Meanwhile, Sung Joon asks Jin Soo to secretly investigate on the pen cap that Sung Joon found in his house. Eventually, Jin Soo finds out that the pen cap belongs to Ju Hwan. After confirming the owner of the pen cap, he goes straight home and finds himself surrounded by suspicious men.

Jin Kyung finds a way to prevent a procedure being performed on Chairman Jin. However, it may take a few more days until the preventive measure can be applied to the chairman. Until then, Chairman Jin is asked to stay low. After witnessing Detective Yang’s wrongful death, Jin Hee requests So Jin to perform a procedure on Chairman Jin as soon as possible. The only problem is that So Jin has no idea what Chairman Jin and Jin Kyung are doing to stand against her procedure.

Chairman Jin survives the procedure done on him with the help from Jin Kyung, and it is now his turn to chase after the one who tried to kill him. When Lee Hwan finds out from Myung Joon that Pil Sung was paid to get Chairman Jin’s personal item, he brutally interrogates Pil Sung to obtain leads to approach Jin Hee and So Jin.

Chairman Jin recognizes So Jin's picture posted on the Forest of Curses and immediately calls Jin Kyung in. Meanwhile, Sung Joon uncovers the close relationship between Jinkyung, Forest’s subsidiary, and the deaths of both Kim Ju Hwan and Yang Jin Soo, and orders a search on Jinkyung. While this is taking place, Jin Hee threatens Chun Joo Bong and finds out about Chairman Jin’s evil scheme.

Jin Kyung invites many shamans from all around the world for a ritual that is scheduled to be held on the day of Forest’s IPO. Among them, master Otomo from Japan, who will be leading the ritual, orders Jin Kyung to have Chairman Jin move to a specific place. Meanwhile, Jin Hee finds out what the talismans and sacred items will be used for, but she gets into trouble right after.

Upon witnessing Jin Hee’s abduction, So Jin decides to go face to face against Jin Kyung and calls Jin Kyung to come and find her at the Sindorim Station. When they confront each other, So Jin lures Jin Kyung into a subway train. Jin Kyung follows her as she underestimates what So Jin is capable of. This is when So Jin grasps Jin Kyung’s hand.

It turns out the Possessed Buddha Statue is capable of preventing anyone near it to be performed by a procedure. For this reason, So Jin’s procedure does nothing to Chairman Jin even when it is done directly. Immediately after Jin Hee wakes up from unconsciousness, she worries about So Jin and her whereabouts and heads straight to Mount Cheonbo.

A day before Forest’s IPO, Pil Sung from Big City Private Eye gives a detailed statement to the police regarding the abduction. This leads to the exact location of a warehouse in which Pil Sung was taken to. After reviewing the surveillance camera, Sung Joon secures the evidence to arrest Lee Hwan. Meanwhile, Jin Hee and So Jin figure out Chairman Jin’s master plan behind Forest’s IPO.

While Lee Hwan pleads guilty of abducting Jin Hee and Pil Sung, Jin Hee and So Jin arrive at the house where Chairman Jin’s mother lives. During their conversation with Chairman Jin’s mother, Jin Hee and So Jin stumble upon the fact that Chairman Jin and So Jin share the same evil spirit. Based on the unlooked-for opportunity, Jin Hee and So Jin devise a scheme to put an end to the evil scheme once and for all.

Chairman Jin’s grand scheme of establishing his empire falls apart into pieces on the very day of Forest’s IPO after a colossal ritual. In the end, Chairman Jin dies helplessly with the evil spirit in his body gone, but So Jin also lapses into unconsciousness when she absorbs the whole spirit to herself. However, Jin Hee is not ready to lose her closest friend again.