Nae Sarang plot
An eccentric girl named Ju-won, who loves the subway, has a date with Se-jin, the subway driver on Line 2 of the Seoul Subway. Se-jin feels more insecure as their relationship progresses. University students So-hyeon and Ji-woo study together in the same department. So-hyeon asks Ji-woo to teach her the art of drinking as a pretext for going out with her. Jeong-seok and Soo-jeong work together in an advertising agency. Soo-jeong is in love with Jeong-seok, but Jeong-seok is a widower and father, unable to let go of his past. And then there's Jin-man, a free hug activist, who returns to South Korea after six years to meet his ex-girlfriend.