Unemployed Do Hwan (Park Won Bin) who lives off stock investments is suffering from a riddling noise ever since In Kyeong (Yuri Seo) moved in upstairs. He can’t work or sleep and gets misunderstood by In Kyeong as a perverted psycho but he falls for her more and more. Hwa Jin, who has a crush on Do Hwan, finds out that In Kyeong is a medium and spreads the word. Do Hwan decides to help In Kyeong who is about to get kicked out. The two of them are drawn to each other and start an investment guide towards the apartment residents. However, when In Kyeong fails to make anymore predictions they are once again faced with a wall…
Pengangguran Do Hwan (Park Won Bin) yang hidup dari investasi saham menderita kebisingan teka-teki sejak In Kyeong (Yuri Seo) pindah ke lantai atas. Dia tidak bisa bekerja atau tidur dan disalahpahami oleh In Kyeong sebagai psikopat mesum tapi dia semakin jatuh cinta padanya. Hwa Jin, yang naksir Do Hwan, mengetahui bahwa In Kyeong adalah perantara dan menyebarkan berita itu. Do Hwan memutuskan untuk membantu In Kyeong yang akan diusir. Keduanya tertarik satu sama lain dan memulai panduan investasi terhadap penghuni apartemen. Namun, ketika In Kyeong gagal membuat prediksi lagi, mereka sekali lagi dihadapkan pada tembok…
