S1 • E1
Sunho falls off the school building. Sunho's parents are devastated to see their boy unconscious in the hospital. Meanwhile, Sunho's friends secretly delete a video playing the "Avengers Game" on their phones before meeting with the detective on Sunho's case.
S1 • E2
The police concluded that Sunho made a suicidal attempt, but Moojin believes that Sunho would never make such choice and decides to find evidence by himself. He looks into Sunho's call records and notices that he called the same number repeatedly on the day of the accident. Meanwhie, Inha finds a button fallen off from Sunho's school uniform and finds it odd.
S1 • E3
Moojin and Inha finds out that Sunho was a victim of school violence and demands to the police for a reinvestigation of the accident. Meanwhile, Jinpyo tells Joonsuk to confess about the video to his teachers. What is the hidden truth behind all the lies?
S1 • E4
The detective shows Moojin and Inha the CCTV footage retracing Sunho's footsteps on the day of the accident. Meanwhile, Youngchul tells Joonsuk that he overheard him tell Sunho to meet at Laputa before the accident.
S1 • E5
Inha finds out that the shoelaces of the shoes Sunho wore on that day was tied as a ribbon and points out that Sunho never ties ribbons. She requests the police to look for fingerprints on the shoelaces. Meanwhile, Moojin learns that there was a car outside the school gates on that day from the food truck owner.
S1 • E6
Soohoo files a public petition online asking people to join her family's fight in getting justice for her brother. Reporter Choi starts to investigate Sunho's case and asks the detective for more information. Meanwhile, Sungjae's mom comes by Inha's bakery with an envelope full of cash.
S1 • E7
Eunjoo is shocked to find out there was a CCTV on the school grounds on that day. Inha is suspicious of Eunjoo who knew about the shoelaces. Meanwhile, Moojin learns that Donghee knows something about the accident from Dongsoo. What is Donghee keeping a secret?
S1 • E8
Moojin and Inha are left in shock after hearing about Sunhoo from Donghee. To find out the truth, Inha heads over to Eunjoo's house to meet Joonsuk. Meanwhile, Sooho and Donghee decides to work together to find the culprit and meets reporter Choi to get his help. Will they be able to prove that Joonsuk was behind the school violence?
S1 • E9
Eunjoo breaks down after learning the truth about the accident and is horrified by her cold-hearted husband who insists on burying the the truth for her son's future. Inha finds out that Eunjoo was at school or the day of the accident and reports to the police. Meanwhile, Joonha and Jinwoo meets Dahee's parents to find out what happened between Dahee and Sunho.
S1 • E10
The school board and students are stirred up after the news report of Sunho's accident and school violence allegations. Joonsuk is being mentioned amongst his peers as the leader of the violent act. Reporter Choi comes to Jinpyo with a deal he can't refuse. Meanwhile, Inha tries to convince Joonsuk to tell the truth.
S1 • E11
Moojin and Inha are in shock after hearing that Sunho is not a victim but an assailant. Meanwhile, Eunjoo is tormented by the unspeakable truth and can't help but suspect her son. She asks him about the lipstick she found in his room but Joonsuk evades the question.
S1 • E12
Inha asks Donghee if she knows who Dahee met after breaking her date with Sunho. Meanwhile, Moojin heads out to meet Jinpyo after receiving a call from him. Later that night, Daegil calls Moojin telling him that he will confess everything he knows.
S1 • E13
Daegil is mysteriously killed from a hit-and-run accident on his way to meet Moojin to tell him the truth. Joonha finds out that Daegil was spotted at the subway station retrieving something from the lockers. Meanwhile, it suddenly occurs to Moojin that Daegil gave them a cactus as a gift before he died.
S1 • E14
On the day of Joonsuk's departure to England, Jinpyo and Eunjoo are held back after receiving a call from detective Park. With the new evidence on his hands, detective Park interrogate all the students and parents involved in the case. Meanwhile, Eunjoo meets Inha to beg for her forgiveness.
S1 • E15
With Sunho conscious and awake, Moojin and Inha cannot be any happier. Suho asks Sunho about what really happened on the day of the accident. Meanwhile, Joosuk chases after Dahee who won't speak to him.
S1 • E16
Suho and Donghee are surprised to see Dahee at the hospital. Moojin tells detective Park that Sunho is recovering quickly and can testify now. Meanwhile, reporter Choi brings in someone who can testify against Jinpyo to the police.
Park Moo-jin
Kang In-ha
Oh Jin-pyo
Seo Eun-joo
Han Dong-soo
Oh Joon-seok
Jung Da-hee
Im Sook Hee