Noh Ji-Wook is a prosecutor in the Central District Prosecutors’ Office who ends up switching professions to a private attorney. He harbors a trauma stemming from an event in his childhood involving his parents and his first love. Eun Bong-Hee, a Taekwondo athlete in her youth, is a prosecutor trainee who has become a murder suspect. Eun Bong-Hee and Noh Ji-Wook both find themselves being the focus of a killer.
Eun Bong-Hee seeks revenge on her cheating boyfriend, but her knight in shining armor turns out to be Noh Ji-Wook, a prosecutor she earlier accused of being a pervert.
Bong-Hee secures herself a legal internship, unaware that her instructor will be Ji-Wook, who remembers her antics well.
The tables are turned when Bong-Hee suddenly finds herself accused of murder. The situation only worsens when Ji-Wook is made the case's prosecutor, his future dependent on her confession.
Ji-Wook finds a bloody knife at the scene of the crime that could greatly affect the case. Bong-Hee's murder trial begins.
Bong-Hee tries to find Hee-Joon's real murderer, but her only hint is a melody. Ji-Wook has trouble adjusting to no longer being a prosecutor.
Bong-Hee and Ji-Wook take on opposing clients, but they realize they must work together when things go awry.
Bong-Hee has a close encounter with the culprit. Ji-Wook notices District Attorney Jang keeping an eye on Bong-Hee.
Bong-Hee searches for work while living at Ji-Wook’s house. Ji-Wook’s ex, Yoo-Jung, comes back to town with a mission in her mind.
Bong-Hee pretends to be Ji-Wook's girlfriend in front of Yoo-Jung. Ji-Wook hands in his resignation letter.
Ji-Wook sets up his own law firm and begins recruiting employees. Lawyer Ji’s backstory with Ji-Wook is revealed.
Ji-Wook quickly becomes frustrated with his newly-assembled team. The suspect of a murder and robbery case requests Bong-Hee as his lawyer.
Bong-Hee has a dangerous confrontation with District Attorney Jang. Jung Hyun-Soo’s lack of an alibi creates difficulty for Ji-Wook’s team.
Bong-Hee struggles to reset her feelings for Ji-Wook after being denied. Details of a past assault case arise concerning Jung Hyun-Soo.
Ji-Wook faces off with unreliable witnesses in the courtroom. Later, he answers a call that could change everything.
Ji-Wook tries to find out more about Hyun-Soo while keeping his team in the dark. Lawyer Ji's excitement for a special day is quickly dampened.
Hyun-Soo begins to catch on to Ji-Wook's suspicions. Bong-Hee has trouble moving on from Ji-Wook when he can't seem to leave her alone.
Go Chan-Ho resorts to desperate measures to get away from Hyun-Soo. Ji-Wook comes to terms with his feelings, but is he too late?
Bong-Hee decides to help lawyer Byun out with his "heroic" DUI case. District Attorney Jang asks Yoo-Jung and Ji-Hye to help him reinvestigate Hee-Joon's murder.
Lawyer Ji receives a strange request from a client and is faced with a dilemma he can't consult his team on.
Bong-Hee becomes determined to figure out the Park Sung-Eun case, even if she has to forgo bathing. Ji-Wook tells Bong-Hee about his family’s past.
Ji-Wook takes on a seemingly psychic client who has a vision that could affect more than just his case. Bong-Hee and Ji-Wook receive a new clue regarding Hee-Joon’s murder.
A frightening realization comes crashing down on Bong-Hee. So Jung-Ha's predictions freak out the firm.
Bong-Hee’s old friend calls her for help after she’s attacked. Ji-Wook’s firm wants to continue investigating Jung Hyun-Soo, but they need help.
Bong-Hee and Ji-Wook search for a witness or a weapon from Yeon-Woo's attack. Social media-savvy Lawyer Ji then takes things into his own hands.
Chief Bang is rushed to the hospital, his fate unknown. Tensions rise at the firm as Ji-Wook begins thinking about revenge.
The firm contemplates if fabricating evidence is their only option for having Hyun-Soo arrested.
Hyun-Soo is admitted to the hospital while still unconscious, therefore putting his arrest on hold. Ji-Wook wonders who could have planted the bloody knife.
An arson case brings back painful memories of the past. Bong-Hee and Ji-Wook go out on an arcade date, but run into unexpected company.
Ji-Wook is at a loss after seeing the photo on Bong-Hee's nightstand, and he decides to delve deeper into the past.
Bong-Hee notices Ji-Wook's strange behavior as they investigate the arson case. Eun-Hyuk goes to Yoo-Jung for help.
Bong-Hee breaks up with Ji-Wook, but is left with nowhere to go. Ji-Wook goes to see District Attorney Jang.
A child from Bong-Hee's Taekwondo classes witnesses a murder, but claims he doesn't remember the killer's face.
Hyun-Soo wakes up, but seemingly can't remember anything, which leaves Ji-Wook suspicious.
The firm looks deeper into Hyun-Soo's past, as he is presented with his own belongings to help jog his memory.
Hyun-Soo's whereabouts are unknown, and no one knows just how much of his memory has returned.
Ji-Wook must tell Bong-Hee the truth about their parents' deaths. District Attorney Jang re-examines his son's murder case.
District Attorney Jang and Hyun-Soo disappear together. Ji-Wook and Bong-Hee search for them, afraid of what might happen.
Hyun-Soo's trial begins, but Ji-Wook doesn't plan to charge him with murder. Instead, he comes up with a new plan.
Bong-Hee worries about all that could go wrong if she gets back together with Ji-Wook. Hyun-Soo's final trial arrives.
A new case causes conflict between Bong-Hee and Ji-Wook as they learn more about how to love each other.
