As the famous novelist Kang Yeo Joo locks herself in her house to work on her new novel, her publisher needs her to sign her latest book.
Yeo Joo reminds her husband Woo Sung that she is the one with the power in their marriage and that there is a pact between them that made her agree to marry him. On the other hand, Soo Ho asks Yeo to be her assistant.
An official investigation into Soo Jung's disappearance begins, but there are difficulties in accessing the surveillance cameras. On the other hand, Soo Ho finds blood in the basement of Yeo's house.
Woo Sung is blackmailed by someone and finds himself forced to pay $5,000 to this person after threatening him to leak incriminating footage of Soo Jung's accident.
Woo Sung is taken to the hospital after being rescued from drowning in the Han River, which worries Yeo Joo and he goes to see him, only to meet an unexpected person.
The police suspect that Yeo Joo is behind the incident but the evidence is incomplete so the investigation continues, and their cameras capture Woo Sung entering Soo Jung's studio.
The police find someone who claims to know details about Soo Jung's murder, which provides new facts that change the course of the investigation. On the other hand, Woo Sung asks for Mr. Nam's help in the investigation.
As Yeo Joo suspects that Woo Sung is having an affair after seeing a strange strand of hair on his shirt, Woo finds himself forced to deal with someone he doesn't want to see.
As Yeo Joo continues her search for the truth behind Woo Sung's affair, Soo Ho discovers interesting facts from someone who was watching Yeo in the past.
Yeo Joo sees Mi Rae hiding in Woo Sung's office, which increases her suspicions. On the other hand, the police learn new facts about Soo Jung from her manager, which makes them go to Yeo Joo's house.
Yeo Joo meets Mr. Ma, but she doesn't know his true identity. He arouses her suspicions because of his insistence on obtaining the publishing rights for her new book.
Yeo continues to watch Woo Sung despite his denial of having a relationship with Mi Rae. Moreover, Soo Ho focuses on gathering information about Yeo's past.
As Woo Sung is arrested for the sudden death of Soo Jung's manager, Yeo Joo is busy thinking about questionable assumptions.
Woo Sung is surprised that Yeo Joo is taking him to the cemetery after sunset, and on the other hand, Mr. Park, a member of the assembly, tries to find out Nam's intentions and his insistence on supporting Woo Sung in the elections.
Woo Sung is confused by Yeo Joo's lie about not knowing about Soo Jung's perfume, and at the same time, the detectives believe that they can get crucial evidence in the case from Yeo Joo, who explains her conclusions about the murder.
Ms. Yeom confesses to killing Soo Jung, but Yeo Joo is suspicious and advises the investigators not to believe the confession. Meanwhile, Woo Sung feels that Yeo wants to kill him, but he is kidnapped. On the other hand, Yeo publishes her new book, which terrifies Mrs. Park.