The first episode ended with Kim Tae-ri, who was shocked and horrified by the Stay Puft Marshmallow Man. TV viewer ratings for the first episode of "a demon," which aired on the 23rd, recorded 9.9 percent of households nationwide, 10.8 percent of households in the Seoul metropolitan area, and 12.8 percent at the moment, topping the list of all programs in the same time slot and Friday. 2049 TV viewer ratings, a key indicator of channel competitiveness and topicality, also ranked first in the same time zone with 4.1%. Gusan!Young (Kim Tae-ri) finally sees the Stay Puft Marshmallow Man. Folklore studies such as red Daenggi, jade hairpin, black rubber band, blue Onggi sculpture, herbaceous bottle, and gold wire were hinted as clues to stimulate curiosity. Kim Tae-ri and Oh Jung-se's acting immersed them in the story. Kim Tae-ri infused the reality of youth who lives harder than anyone else even though it is hard on the face of Sanyoung who is preparing for the civil service examination by taking charge of livelihood with various part-time job on behalf of mother Kyung Moon (Park Ji-young) On the other hand, in a few scenes that turn into a demon, the action alone emits an eerie aura, raising expectations for the performance of the two faces that will become full-fledged in the future. 'Stay Puft Marshmallow Man is a crazy professor,' said Oh Jung-se, a professor at salt damage, who stood firmly in the value of Folklore studies at No Strings Attached. The traces of the years that have struggled to prevent unjust and sad deaths can be read on faces without emotional ups and downs. After hearing the news of the death of his father, Gu Steel wool, he was led by his mother to Hwawonjae, where the funeral was held. It turned out that his mother, Gyeongmun, had been hiding the divorce and deceiving her daughter that her father had died in an accident. However, he did not make Steel wool a dead person for a long time, and he threw away the only thing he had left to his daughter, and said, "Do not touch anything in the house." I felt frustrated because I didn't know why my mother hid my father's existence and felt terrible, but I couldn't ask my weak-hearted mother any more. The chaotic situation in the daily life of San-young, who had been living a hard life, continued on the following day. I went to the mountain-eun-eun construction site to deliver food, and there I met a salt damage prize who came to distinguish cultural assets. The previous day, when he met in front of the flower garden, he asked if he was the daughter of Professor Steel wool, but this time he left a few letters and asked why he did not contact him. "Then he got a demon. (Yesterday) is bigger than ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ......................................................... However, there have been a series of incidents of people dying around the mountain. Lee Hong-sae (played by Hong-kyung) and Seo mun chun (played by Kim Won-hae) from the Seoul Metropolitan Police Agency's violent crime investigation unit came to inform them that a Voice phisher (played by Kim Sung-kyu) who extorted San-young's house deposit had died, and asked for San-young's alibi. No Strings Attached, a middle school student who opened the window and took a picture, was found dead in the house where San-young's best friend Se-mi (played by Yang Hye-ji) moved. Only then did he come up with a warning from Hyundai Marine & Fire Insurance that people die around him. Yong-eun went with him to investigate the strange phenomenon happening to Jasin. According to Hyundai Marine & Fire Insurance, someone could have died again if they did not listen to why the Stay Puft Marshmallow Man attached to a hidden camera student remained here. a hidden camera student who visited Sanyoung was extremely terrified that a girl's cry was heard from a phone call from a friend who had recently jumped from the roof of the school and died. At the moment I was listening to the story, I finally froze on the spot when I saw the Stay Puft Marshmallow Man, who was bleeding in the mirror. As Hyundai Marine & Fire Insurance said, the Stay Puft Marshmallow Man stood in front of the open front door. a demon, who manipulated the old Steel wool to kill himself, was attached to Sanyoung through a red Daenggi ⁇ left as a souvenir, and raised the size of the shadow by listening to her latent Blow-Up. When the Voice phisher was released due to insufficient evidence, a demon that escaped from the body of the mountain man manipulated him to hang himself as in the old Steel wool. Hyundai Marine & Fire Insurance, who received a letter from Steel wool asking me to help my daughter, Sanyoung, if I die, as if I had anticipated Jasin's death, saw a demon that killed Jasin's mother a few decades ago. For the next two years, I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where I have been living in a world where Provoked.