In the first broadcast, two weeks before the transfer to a rural village, Jo Tae-Sik (Lee Min-ki) is a detective at Kwangsoo University who even finished a farewell party with his team members. He began to take charge of the car accident case of lawmaker Kim Seung-Chul (Kim Jong-soo) at the last request of team leader Yoo Dae-young (Lee Joon-hyuk).

The pieces of evidence collected were without a seat belt, it looked like a suicide, but the black box disappeared and the car's brakes were broken. On top of that, as soon as the cigarette butts accidentally fell on the road at the scene of the accident, Tae-Sik, who found out that there was a third person at the scene of the accident, he started to wonder, "I don't think it was an accident."

Tae-Sik found through Kim Seung-cheol's phone records on the day of the accident that he called his son-in-law and the only son of JQ Group Chairman Jung Sang-hoon several times, but failed to make a call. In response, Tae-Sik visited Kim Seo-hee, the youngest daughter of Kim Seung-Cheol and Jung Sang-hoon's wife.

Seo-hee was also confused. Following his father's sudden death, Hong Min-kook (Song Young-chang) proposed to run for the by-election, calling for his father's inheritance. The mother who was played by Yoon Bok-in said, "This is all to protect our family." Seo-hee heard the shocking news from Tae-Sik, "Your father was murdered, not killed in an accident," and she could not give any answers about his whereabouts.

In the end, Tae-sik found no particular clue except that his father-in-law and son-in-law did not get along well due to the new project. "By the way, I found out something unexpected when I checked the CCTV on the road based on the location where Sang-hoon's cell phone signal was last seen."

There was a car chasing him, and the driver was Seo-hee. When it was confirmed that the person chasing Sang-hoon was Seo-hee, Tae-Sik headed to the memorial event for Kim Seung-Cheol. At that time, Seo-hee took the podium with a memorial address. When he began barely speaking and reading, a shrill scream came from afar, and people began to rumble around the fountain of the square where the memorial service was being held.

Tae-Sik, who arrived at the scene, squeezed through the crowd and witnessed it. There was a hand sticking out of a small box. A bold man's hand and a ring were inserted. But Seo-hee, looking at the box with a bewildered face among the crowd, had the same ring on her ring finger.

Catch OCN's new drama "The Lies Within," starring Lee Min-ki and Lee Yoo-young every weekend at 10:00 pm.