Gi Tae-hwa and Lee Ye-ju have been known as exceptionally close “friends” since their school days. However, after Tae-hwa gets dumped by his ex-girlfriend because of Ye-ju, he becomes emotionally conflicted and uses the military as an excuse to put some distance between them. After his discharge, they run into each other at a drinking party. Tae-hwa, a sucker for a pretty face, is helpless against Ye-ju’s sincere expression when he confesses that he’s single. Using the excuse of “helping him out,” Tae-hwa ends up spending the night with him. He wants to pretend it never happened, but Ye-ju begs him to try “dating practice,” and Tae-hwa decides to go along with it, thinking they can just go back to being best friends. But… why do they keep rubbing that against each other?! Are we really just friends?!