The 35-minute short film first premiered on April 29, 2013, at a showcase in Times Square in Seoul's Yeongdeungpo District,[7] and was then released online on April 30 on the website of outdoor clothing brand Kolon Sport, as well as portal sites Daum and YouTube.[8]One Perfect Day was the second short film after Park Chan-wook's Day Trip to be commissioned and funded by Kolon Sport for its "Way to Nature Film Project," which marks the company's 40th anniversary.[9]
Plot
A man named Un-cheol (Yoon Kye-sang) is looking for a girlfriend. He goes on a series of unsuccessful dates, culminating in a disastrous blind date with Yoo-jin (Park Soo-jin), and his awkward banter, stupid jokes, and complete insensitivity to her feelings, leads Yoo-jin to ditch him while they're playing the game Rock-paper-scissors.[10] In a flashback to Un-cheol's childhood, his father had taught him Rock-paper-scissors and given him some life lessons. As Un-cheol morosely wanders the streets that night, he finds a missing dog, which he returns to its owner, Eun-hee (Park Shin-hye). She insists on giving him a monetary reward, but instead, he asks her to play Rock-paper-scissors with him—if he wins, she goes on a date with him, but if he loses or it's a draw, he walks away and never bothers her again.