第 1 季 共 16 集
播出时间：2015年4月28日
第 1 集 Episode 1
播出时间：2015年4月28日
High school girls Lee Eun-bi and Ko Eun-byeol live miles apart and their experiences are vastly different, yet they share an uncanny resemblance.
第 2 集 Episode 2
播出时间：2015年4月29日
After ten days of frantic searching, Eun-byeol's mom receives a call from the hospital, where she learns her daughter doesn't remember anything.
第 3 集 Episode 3
播出时间：2015年5月5日
Yeong-eun's mom demands an investigation for the recent incident and alleged bullying, but the situation is complicated by Eun-byeol's amnesia.
第 4 集 Episode 4
播出时间：2015年5月6日
Eun-bi tries to find out what happened to Eun-byeol. After discovering a letter in her daughter's room, Eun-byeol's mom hurries to the House of Love.
第 5 集 Episode 5
播出时间：2015年5月12日
Eun-bi's confusing life is further complicated by a new transfer student, who keeps wanting to hang out with her group of friends.
第 6 集 Episode 6
播出时间：2015年5月13日
So-yeong schemes relentlessly against Eun-bi. Tae-gwang pretends not to be concerned despite being secretly worried about Eun-byeol.
第 7 集 Episode 7
播出时间：2015年5月19日
Eun-bi resolves to be more like Eun-byeol and stands up to So-yeong. I-an offers to help, but Eun-bi can't get herself to tell him the truth.
第 8 集 Episode 8
播出时间：2015年5月20日
Three teams in Eun-bi's class fail to turn in their group projects after someone tampers with their computers. Eun-bi suspects So-yeong.
第 9 集 Episode 9
播出时间：2015年5月26日
I-an goes to see Eun-byeol's mom to ascertain what happened to Eun-byeol. During I-an's absence, Tae-gwang and Eun-bi grow closer to each other.
第 10 集 Episode 10
播出时间：2015年5月27日
Feeling responsible for I-an's injury, Eun-bi tries to help him, but he pushes her away. So-yeong enlists her mom's help to get out of a tight spot.
第 11 集 Episode 11
播出时间：2015年6月2日
Eun-byeol's mom sees her daughter confronting another student. Tae-gwang tries to help Eun-bi from being forced to transfer to another school.
第 12 集 Episode 12
播出时间：2015年6月3日
While checking the school's security footage, Mr. Kim spots something shocking. Tae-gwang discusses Eun-byeol's situation with his father.
第 13 集 Episode 13
播出时间：2015年6月9日
So-yeong threatens to reveal the results of the handwriting analysis in front of the class. Tae-gwang senses something very different about Eun-bi.
第 14 集 Episode 14
播出时间：2015年6月10日
Eun-bi is caught between two places she considers home. I-an has mixed feelings for Eun-bi. Tae-gwang ponders what to do with the autopsy report.
第 15 集 Episode 15
播出时间：2015年6月16日
I-an tells Tae-gwang the real reason why he was angry at Eun-bi. While trying to repair her phone, So-yeong remembers the video that she took before.
第 16 集 Episode 16
播出时间：2015年6月17日
Eun-bi's family decides to move and start afresh. Eun-bi makes her feelings known to Tae-gwang and I-an, and Eun-byeol says her goodbyes.
