Still 17 : Episode 25

Gong Wu-jin, 17 tahun, memberanikan diri berbicara dengan gadis satu sekolah yang disukainya, tetapi obrolan itu membuat si gadis terkena musibah & koma selama 13 tahun.

Seo Ri wakes up from her coma and realizes she is 30; Woo Jin's sister calls him back to Seoul.

Wu Seo-ri mencari kerabatnya, tetapi lingkungan lamanya telah berubah. Kemudian, ia ingat sesuatu yang mungkin masih ada di tempat ia meninggalkannya 13 tahun lalu.

Woo Jin, Chan, and Jennifer all hear something during the night. They go the first floor and are shocked to see something coming out of a cabinet. Seo Ri stays the night at Woo Jin's place and reveals how this house became as it is now.

Setelah mengetahui mahalnya biaya perbaikan biolanya, Seo-ri mencoba mencari pekerjaan, tetapi tak mudah. Yu Chan berhasil membuat Seo-ri bercerita tentang masa lalunya.

Seo Ri fails to make the cut for the orchestra, and Chan helps to comfort her feelings. While eating tteokbokki together, Seo Ri receives good news from the violin academy that she can perform for 2 to 3 weeks as a substitute.

Saat Seo-ri menyalahkan Wu-jin karena membuatnya kehilangan pamannya, Wu-jin merasa bersalah dan pindah rumah.

Once Seo Ri realizes that she may have confused some other man as her uncle, Seo Ri feels regretful for talking so cruelly toward Woo Jin and chooses to apologize to him.

Chan menyukai seseorang. Seo-ri melakukan sebuah gerakan yang membuat Wu-jin mengingat sesuatu dan meminta bantuan psikiater lamanya.

While both Woo Jin and Chan have feelings for Seo Ri, each have very different approaches toward Seo Ri.

Wu-jin mencoba menghindari Seo-ri, yang minum alkohol untuk pertama kalinya bersama rekan-rekan kerjanya dan diperkenalkan kepada violis konser, Kim Tae-rin.

Seo Ri gets drunk during the team dinner, and accidently enters Woo Jin's room which brings a very awkward situation the next morning. Woo Jin tries to avoid Seo Ri to hide his feelings, but it get harder and harder.

Saat seorang klien mencoba memanfaatkan kenaifan Seo-ri, Wu-jin datang menyelamatkannya, dan kemudian menjadi mabuk. Jennifer mengingat masa lalunya yang menyakitkan.

Woo Jin gets drunk while he was trying to protect Seo Ri from Mr. Kang at the bar. Afterwards, Woo jin's behavior makes Seo Ri question the reason behind it.

Seo-ri pergi bersama Wu-jin ke sebuah lokakarya. Di sana, seseorang mendengarnya bermain biola. Kemudian, Seo-ri dan Wu-jin saling bercerita tentang masa lalu mereka.

Woo Jin takes Seo Ri to the ocean to cheer her up; Seo Ri shares her perspective with Woo Jin, who feels sorry for how he treated her.

Kakaknya Wu-jin membuat asumsi bahwa Seo-ri dipaksa mengikuti permainan. Jennifer bertemu dengan si wanita misterius. Chan menemukan sebuah foto yang mengkhawatirkan.

Woo Jin convinces his father not to sell the house as he is planning to stay there more often without going abroad for months. In the meantime, Seo Ri and Hee Su get lost on an island as they cannot sail back home.

Seo-ri mendapat undangan tak terduga, tetapi ragu untuk menerimanya. Sebuah komentar Seo-ri tentang "melihat musik" memberi Wu-jin ide desain.

Woo Jin feels uncomfortable as one of female employee tries to set a blind date up with Seo Ri and her son, so Woo Jin gets in the way to stop it.

Chan terus berlatih terlalu keras. Jennifer menceritakan caranya mengetahui begitu banyak fakta. Wu-jin mendengar percakapan yang membuatnya ingin melindungi Seo-ri.

Woo Jin accidentally overhears Byun's conversation with the reporter regarding spicing up the story about Seo Ri, so that people want to watch the pitiful girl.

Obrolan dengan orang tak dikenal membuat Seo-ri menyadari sesuatu. Konduktor Sim Myeong-han berbicara jujur dengan Tae-rin. Timnya Chan bertanding demi menjadi juara.

Shim tries to keep a jealous Tae Rin focused on her music; Seo Ri apologizes to Tae Rin for her shifting attitude about the performance.

When Seo Ri's aunt finds out Seo Ri's phone number, she tries to find out more by calling the hospital but fails to gather any information.

Saat Seo-ri pergi tidur dalam keadaan berduka, Wu-jin memikirkan apakah akan mengungkapkan perannya dalam kecelakaan. Jennifer mengingat kaitannya dengan tabrakan itu.

When Seo Ri finds a drawing in the storage, she tries to seek Woo Jin as she realizes the person in the drawing is herself. However, Woo Jin is gone and waiting to get on the plane at the airport.

Seo-ri memberi tahu Wu-jin kisah sebelum kecelakaan versinya. Chan mengungkapkan perasaannya kepada Seo-ri, yang nantinya bertemu pria yang membayar biaya opnamenya.

Chan explains that he likes her more than as a friend, but also tells her that his feeling are all in the past. Later, Woo Jin informs Seo Ri that it was not her aunt and uncle who paid for her hospital bills.

Seo-ri akhirnya mengetahui hal yang terjadi terhadap kerabatnya. Ia dan Chan sama-sama menghadapi keputusan sulit tentang masa depan mereka.

Tae Rin invites Seo Ri to Germany by giving her an opportunity to start over. Seo Ri hesitates as she has to leave Woo Jin behind, but she also knows that this is her last chance to chase her dream.