Aired: 5/25/2018
Hard-boiled detective Dongsu encounters Sihyeon with a sketchbook. In the sketch, Dongsu sees figures with his wedding ring on. He soon realizes that the sketches show the future, and that his fiance is in
Aired: 5/26/2018
Dongsu's fiance Jisu is in danger of getting killed by a garage worker, but Dongsu and Sihyeon saves her. Meanwhile, as the sketch represents, sergeant Dojin's wife gets murdered, hence Dojin swears to revenge
Aired: 6/1/2018
Dojin kills Dongsu's fiance by following orders from Taejun. Meanwhile, Dongsu and Sihyeon work together to find out who killed Dongsu's fiance, and Dongsu eventually finds out that it is Dojin.
Aired: 6/2/2018
CEO Nam tries to kill Dojin and solicits the man who killed Dojin's wife, who is in jail. Sihyeon sees this, and tries to prevent them, but ends up being kidnapped.
Aired: 6/8/2018
Dojin heads to where Ilsu is, according to CEO Nam's plan. Meanwhile, Dongsu finds Sihyeon before she dies, by tracing Ilsu's brother.
Aired: 6/9/2018
Dongsu saves Sihyeon and captures Ilwoo. Meanwhile, Dojin fulfills his revenge on Ilsu, but soon gets kidnaped by CEO Nam and his men. Therefore, Dongsu approaches CEO Nam to find Dojin.
Aired: 6/15/2018
Dongsu confronts Dojin once again, but as the bomb he already planted explodes, CEO Nam's men die, yet Dojin leaves Sihyeon and Dongsu to live. Meanwhile, Sihyeon and Dongsu suspects another person
Aired: 6/16/2018
Team Nabi reveals that Ujin, as well as Dojin, has a role of killing potential criminals in the future by following the orders of Taejun. However, Ujin tells Dongsu everything about the truth behind Taejun and his secret supporter
Aired: 6/22/2018
Ujin kidnaps Taejun using the notepad that has the senior's orders. Ujin tries to identify who the senior is, but soon he gets killed by Dojin. Meanwhile, Sihyeon and Dongsu learns that the senior has significance with Sihyeon's father.
Aired: 6/23/2018
Tae Joon offers Do Jin an opportunity to meet the man in charge. Shi Hyun has to decide what she is willing to sacrifice for her brother.
Aired: 6/29/2018
Sihyeon and Dongsu continues to try find who is behind Taejun, while Sijun approaches prosecutor Mungi who has powerful connections, hence orders Dojin to kill the prosecutor's rival.
Aired: 6/30/2018
Mungi wants to meet the senior in person, while suspecting Taejun and Sijun for helping him without any conditions. Meanwhile, Sihyeon is in agony as she draws the death of her companion.
Aired: 7/6/2018
Mungi tries to kidnap Sijun, but knowing the future, Sijun also kidnaps his daughter and threatens him to gain information related to the senior. Meanwhile, Dongsu starts to suspect Sijun.
Aired: 7/7/2018
Dongsu realizes that Taejun's supporter with the ability is Sijun. Meanwhile, Sijun and Taejun knows where the senior will appear, hence they make their final plan to reveal the identity of the senior.
Aired: 7/13/2018
Taejun kills manager Choe and kills himself. Mungi realizes that the senior is not one person but a group involved in powerful organizations that run the country. Meanwhile, Dojin is angry at Taejun and Sijun for not telling his wife's death before.
Aired: 7/14/2018
Sijun sees the future where Dongsu and Sihyeon arrest the senior group, so he tries to kill himself but fails. Meanwhile, Sihyeon and Dongsu continues to use the sketch to fight against the senior group.