Baek Beom and Cha Soo Ho work on a case and find out that there is more to it than it seems.

Eun Sol, a newbie prosecutor, holds hands with Baek Beom and Cha Soo Ho to investigate a murder case of a conglomerate's son and wife; Sol and Beom speculates that the husband beat her, who was pregnant, to death.

Sol is shocked to hear Beom's testimony that Man Sang's violent act is not the cause of Hee Kyung's death.

Although the trial seems to be leaning in the defendant's favor, Sol does not lose heart and begs Beom to analyze the heels that she wore to the crime scene.

All evidence suggests Cha Su-ho is guilty of killing a woman inside her apartment; wanting to prove otherwise, Sol sets out to uncover answers.

Sol suspects Jang Deuk Nam's case is murder and indicts his three sisters and his wife as suspects.