The film tells the story of a graphic designer in her early 30s, Seo Young (Chun Woo Hee), who suffers from tinnitus and dizziness, and is uneasy about being an informal employee and having problems with her family. Although she is enjoying a sweet office romance with Jin Soo (Yoo Tae-woo), who is very popular in the company, this relationship is also in jeopardy. One day, Seo Young and a man (Jung Jae-kwang) who is leaning on a rope like Spider-Man in a city building look at each other through the glass window, and gradually this man begins to capture her tired heart.