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위시유 : 나의 마음속 너의 멜로디
才华洋溢的创作歌手与同龄键盘手一起歌唱和追梦，为彼此的人生注入悦耳的合音与爱情。
仁秀是在街头驻唱歌且具有特色嗓音的美少男。经纪人敏雅将仁秀唱歌的样子将上传到YouTube上。被在唱片公司企划组里，最小的的李想发掘，李想将担纲仁秀的专门经纪人。因缘际会下就这样开始了仁秀和李想的同居…
While out on a walk, Sang Yi happens upon In Soo while he is recording a new music video. Enchanted by the song, Sang Yi finds himself hooked to listening to In Soo's music. During a night out for drinks with his colleagues, Sang Yi once again crosses paths with In Soo.
When Sang Yi has the chance to meet In Soo he freezes. At the record company, Yoo Jin proposes to her boss to give In Soo a chance at their company and offers Sang Yi the opportunity to begin working full time on the In Soo project with her.
In Soo begins his first day at the recording company, meanwhile Sang Yi is bogged down with administrative work instead of being in the studio.
Yoo Jin and In Soo negotiate the details of his recording contract. One important item arises, Sang Yi as assistant producer will live with In Soo until his debut.
Conflict arises at the studio when the producer tries to dramatically change In Soo's music.
After a night of drinking, Sang Yi takes In Soo to one of his favorite rooftop spots where In Soo confides in Sang Yi.
In Soo is set to be the fastest debut the recording company has ever had but his father's expectations stand in the way.
With Sang Yi by his side, In Soo makes one more push for his music career.
