17 歲的孔宇振鼓足勇氣，跟自己在學校暗戀的對象說話，兩人的交談卻意外導致她陷入險境，繼而昏迷了整整 13 年。

禹瑞莉尋找親戚的下落，但鄰居卻全是陌生的面孔。接著她想起了一樣可能還擺在跟 13 年前相同位置的東西。

瑞莉得知修理小提琴的價格高昂之後，試著找份工作，卻不太順利。瑞莉對柳燦敞開心扉，說出自己的過去。

瑞莉責怪宇振害她追丟了舅舅，讓他再度嚐到內疚的滋味，促使他搬家離去。

柳燦對某人產生好感。瑞莉擺出的手勢似曾相識，激起宇振的回憶，他為此找上先前的精神科醫師。

宇振試著躲避瑞莉。瑞莉跟新同事第一次喝酒，還認識了小提琴演奏家金泰琳。

一位客戶眼見瑞莉天真無邪，意圖佔她便宜。宇振出手搭救，卻因此醉倒。珍妮佛想起自己痛苦的過往。

瑞莉和宇振一同出門參加工作坊，卻在那裡被他人無意間聽見她拉琴的聲音。不久之後，她和宇振互相訴說自己的過去。

宇振的姊姊認為瑞莉出於無奈而配合。珍妮佛和一位神秘的女子見面。柳燦發現一張令人憂心的照片。

瑞莉意外獲得邀約，卻因為該不該接受感到苦惱。瑞莉對「看見音樂」的說法，激發宇振的設計靈感。

柳燦持續魔鬼訓練。珍妮佛透露自己為何曉得這麼多事情。宇振意外聽見一段對話，忍不住想好好保護瑞莉。

和一名陌生人交談後，瑞莉有所領悟。指揮家沈明煥與泰琳懇談。柳燦的隊伍努力爭奪獎牌。

瑞莉得知噩耗，備受打擊，倒在床上，宇振則糾結到底該不該說出自己在她的意外中扮演的角色。珍妮佛回想自己和撞車事件的關聯。

瑞莉告訴宇振自己在發生意外之前的經歷。柳燦向瑞莉表白，稍後瑞莉遇見了當初替她付醫藥費的男子。

瑞莉終於得知親戚的遭遇，而她和柳燦都得針對自己的未來，做出艱難的決定。

When Chan's mom visits Woo Jin's place, they decide to lie and tell her that Seo Ri is their housekeeper to avoid any drama. However, Seo Ri feels uncomfortable about lying and tries not to be seen by Chan's mom.

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.

While Seo Ri and Woo Jin spend some time together at an empty house, Deok Su calls Woo Jin telling him that Chan has fainted. Woo Jin leaves the place immediately to see Chan which makes Seo Ri concerned.

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.

While Woo Jin visits his therapist and tells him that he doesn't want to hide emotions from others just because he feels guilty about an incident that happened in the past.

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.

After the motive behind the music festival is revealed, Woo Jin expresses that he doesn't want to see the woman he likes hurt. However, Seo Ri is persistent about performing and encounters a difficult time accepting the situation.

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.

Woo Jin and Seo Ri confess their feelings for each other and share their first kiss. Meanwhile, Hee Su becomes a full-time employee and shares her enjoyment with everyone.

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.

Woo Jin finds out that Seo Ri is the same person he once loved and emotions erupt while thanking her for being alive. Meanwhile, Chan is shocked after the nurse addresses Woo Jin as Seo Ri's boyfriend and denies to admit it.

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.

Finally Woo Jin confesses everything about the car accident to Seo Ri, saying it's all his fault. Seo Ri also confesses to Woo Jin that she had a crush on Woo Jin and liked him first.

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's aunt decides to meet Seo Ri after listening to Woo Jin's message. Seo Ri's aunt can only apologize in tears when she finally meets Seo Ri. Later, Seo Ri finds out what her uncle did to protect Seo Ri's house from bankruptcy.

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.