1. Truth-or-Dare: Ji Yung and Jin used to be close friends, but are currently going through a rough patch. An unusually drunk Jin suggests that they play Truth-or-Dare and so begins their session of sheer honesty.
2. Delusion: 60 year-old Frank, in love with Julia since he was young, comes to realize he had been in denial about her having died along time ago, whereupon he fatally shoots himself.
3. The Doorto the Heart Doesn’t Open From the Inside: Dong Jin admits boredom to her lover Seo Yoo and initiates a breakup. He tried to talk to her, but Dong-jin wants to be left alone. With his house locked up, he roams around in the middle of the night, without any means of contacting her. No longer wishing just to wait, Seo Yoo leaves to find Dong Jin, coming upon her in front of her house, where all their old memories are kept.
4. Cigarette Buddy: When Ah Yung was with Jung Cheol, she had taken up smoking because of him. No longer a couple, she visits Jung Cheol, only to smoke with him and his current girlfriend.
(Source: HanCinema; MyDramaList)