Woo Tae-ho (Jung Moon-seong) found the collapsed Cheon Nana (Kim Hyo-jin)!! Chun Nana, who finds her consciousness, tells her husband Woo Tae-ho that her brother Cheon Sang-woo (Choi Dae-hoon) does not know what to do to her, and informs the world of her room salon assault two years ago and asks her brother to be sent to prison. . Meanwhile, Gang Gang-chang (Son Hyun-joo) X Oh Ji-hyuk (Jang Seung-jo), the 2nd strong team, who secured CCTV video of the room salon assault case that did not exist two years ago

Moon Sang-beom (Son Jong-hak) and Oh Ji-hyeok (Jang Seung-jo) are in charge of their daughter, and they are like lightning...

Gang Do-chang (Son Hyun-joo) and Oh Ji-hyuk (Jang Seung-jo), who heard the conversation in the black box of the car crashed by Woo Tae-ho (Jung Moon-seong), go to the director of TJ Group, Cheon Nana (Kim Hyo-jin), who was the passenger. On the spot, Chun Nana tells her two detectives her deep story with her husband and asks them to consider her husband's death as a simple car accident...