On leave from the military, Cheol-soo arrives at his girlfriend's apartment only to find it occupied by another woman, Choon-hee. After a few days he finds out that his girlfriend is now engaged to someone else, and having nowhere else to go he ends up staying with Choon-hee. At first the two struggle to get along, but before long Chul-soo discovers that she is writing a screenplay to enter into a competition, and they end up working on a story together based on their own experiences of love, titling it "Art Museum by the Zoo."