Episode 7 begins with Geon-ho having a flashback of observing a group of children mistreating his brother Su-oh. Jeong-woo arrives and attempts to intervene with the boys, but ultimately gets harassed by them. Jeong-woo defends Su-oh vigorously, leading Geon-oh to also protect his twin brother.
After the fight, the twins and Jeong-woo enjoy eating ice cream. The scene transitions to present day as Geon-ho apologizes to Jeong-woo for the previous events. He hands the suitcase to Jeong-woo who discovers Bo-young’s purple backpack inside. Simultaneously, Gu-tak requests Heung-soo and Choo-ho to retrieve Geon-ho prior to delivering the suitcase to Jeong-woo.
Upon glimpsing the bag, Jeong-woo is surprised and peeks into it. He discovers Bo-young’s phone and attempts to power it up. Jeong-woo hurries to the storage room in search of an old charger, attempting to power on the phone. Meanwhile, Hyung-sik brings Ha-seol to see Su-oh, but she becomes uneasy in his presence during the journey.
Na-kyeom organizes a phone gathering in an attempt to gather details about Bo-young from her classmates. Min-soo and Byeong-moo arrived right on time and made an effort to steer clear of discussing Bo-young. Min-soo and Byeong-moo warn Na-kyeom to avoid getting involved with Jeong-woo, a former prisoner, causing a sense of unease.
Na-kyeom is horrified by the remark and urges the pair to cease reaching out to Jeong-woo after persuading him to depart Mucheon permanently. Ha-seol can finally have a private conversation with Su-oh, revealing to him that there are no paintings in the greenhouse. Su-oh, feeling overwhelmed by the information, requests Ha-seol to promptly deliver his paintings to Jeong-woo.
Hyung-sik observes Su-oh’s unease and intrudes into the room to investigate the situation. Ha-seol mentions that Su-oh is interested in creating artwork and is diverting him. As soon as Gu-tak gets home, he is about to hurry to Jeong-woo’s house when Dong-min and Jae-hee appear there. Dong-min explains to Gu tak that he had no intention of cremating Bo-young despite his efforts to locate her over the years. The couple disagree and get into a quarrel at Gu-tak’s residence.
Jeong-woo looks through the messages on Bo-young’s phone after it finally powers on. Meanwhile, Heung-soo and Choo-ho reach Jeong-woo’s house and attempt to grab Geong-woo and the suitcase before Jeong-woo arrives. Geon-oh opposes and flees into Jeong-woo’s room. He attempts to conceal a notebook found in Bo-young’s bag but Heung-soo forcibly opens the door and takes the bag from him.
Choo-ho places the bag inside the suitcase and prepares to remove Geon-oh, but Jeong-woo secretly stashes the phone in the storage room before reentering the house. The duo assaulted Jeong-woo and rendered him unconscious while escorting Geon-oh to Gu-tak’s residence.
Simultaneously, Sang-cheol phones Jeong-woo to see how he’s doing and detects a faint sound coming from the other end. He goes to Jeong-woo’s residence and discovers him unconscious. Ha-seol arrives back in Mucheon just in the nick of time and goes past Jeong-woo’s residence. Sang-cheol requests an ambulance and instructs Ha-seol to stay with him at the hospital as he looks into the assault on Jeong-woo.
Gu-tak shows up at Jeong-woo’s house and Sang-cheol tells him about the attack on Jeong-woo from the night before that left him in the hospital. Jeong-woo calls Byeong-moo and Min-soo to his house to chat with them. At the same time, Choo-ho and Heung-soo discuss how Gu-tak was treating them badly.
Choo-ho is tired of this and tells Ha-seol that she can stay for as long as she wants. At the same time, Na-kyeom visits the hospital to talk to Hyung-sik about Jeong-woo and his mother. Na-kyeom tells Hyung-sik that she used to volunteer at the hospital when she was in high school. A flashback shows Hyung-sik flirting with Da-eun, a high schooler.
Present-day Hyung-sik is shocked at how he does not remember a pretty girl like Na-kyeom. Assemblywoman Young-sil learns that her husband was seen with a girl – Ha-seol. She rushes to Hyung-sik’s office to meet him. There she finds him chatting with Na-kyeom. The trio chat for a bit after which Na-kyeom leaves.
Meanwhile, at Jeong-woo’s house, he tries to get Byeong-moo and Min-soo to drink out of glasses so he can collect their DNA samples. Min-soo drinks from the glass but Byeong-moo does not touch his drink. The cop gets called in at work urgently which prompts the two to leave. Young-sil asks Hyung-sik what he was doing with Ha-seol the night before and he reveals that she was a friend of Su-oh who wanted to meet him.
Choo-ho confronts Gu-tak for treating him and Heung-soo poorly, while Heung-soo pleads with Gu-tak for assistance in their situation. Ha-seol discovers that Jeong-woo is not feeling well and requires a stay at the hospital to recuperate for a couple of days.
Sang-cheol is simultaneously searching for leads to locate the attacker of Jeong-woo. He ultimately stays overnight in the storage area and discovers Bo-young’s phone there. While on the phone, he discovers a video of Geon-oh, Byeong-moo, and Min-su drinking with Bo-young at the warehouse on the night she was murdered.
In the video, Bo-young can be seen requesting Geon-oh to leave and come back with a pricey bottle of alcohol. Meanwhile, Geon-oh confesses to Gu-tak that he feels guilty and plans to surrender for his wrongdoing. Gu-tak attempts to prevent him and confines him in a room, making him comply until he can be returned to the United States. Jeong-woo returns to his residence after leaving the hospital and encounters Sang-cheol.
Sang-cheol reprimands Jeong-woo for attempting to conceal the phone containing incriminating evidence against his friends. Jeong-woo forcibly removes Sang-cheol from the room and discovers the textbook that Geon-oh had secretly placed there. The textbook has in it Bo-young’s underwear that had disappeared. Sang-cheol urges Jeong-woo to not tell Gu-tak about this information as they are unsure of his allegiance.
Jeong-woo discovers Ha-seol standing outside Gu-tak’s residence. He inputs the code to the police officer’s residence and enters, discovering Geon-oh in a room that is locked. Ha-seol and Jeong-woo aid Geon-oh in fleeing and escort him to safety. Upon the departure of Jeong-woo’s friends, Sang-cheol picks up the glass Min-soo used and obtains Jeong-woo’s DNA sample. He invites Byeong-moo and the rest of his team to dine together.
Sang-cheol covertly takes Byeong-moo’s spoon and departs to the National Forensic Department. Gu-tak and Hee-do talk about the recent discovery in the case after Bo-young’s skeletal remains were uncovered at the police station. Byeong-moo becomes wary of the situation and begins to follow Sang-cheol closely.
Sang-cheol evades capture and successfully hands over DNA samples from Min-soo, Byeong-moo, and Jeong-woo for testing in the case involving Bo-young’s underwear. Geon-oh begins expressing remorse to Jeong-woo for the events that transpired, mentioning Min-soo and Byeong-moo. Jeong-woo hastily goes to the hospital to confront Min-soo angrily and acts aggressively towards him.
After some time, Sang-cheol receives the evidence showing that Min-soo and Byeong-moo committed sexual assault against Bo-young. Byeong-moo hurries to the Forensic Department and finds out that Sang-cheol possesses the documents that could ruin his life. He follows the police officer in his vehicle. The episode concludes as Min-soo claims that Jeong-woo is responsible for whatever occurred to Bo-young.
What an episode. I had a feeling the friends were hiding something. But this is just…can’t wait to see what happens next. Thanks for reading.