With messy hair, shabby clothes, and a burden on her shoulder that matches her own size, Yu-eun, who lives in room 802, finds her new neighbor in room 801 suspicious. The woman, who seems to be a Korean expatriate, makes noise every night, speaking in a twisted foreign language that Yu-eun can't quite understand. The woman from room 801, who brings foreign friends over, consistently creates a ruckus in English. Fed up, Yu-eun kicks her bed and storms out. "Sorry for being out so late." "No problem." The neighbor's response clearly penetrates Yu-eun's ears in Korean. Yu-eun's reply, however, is a short English phrase that makes her perfect English exam score feel meaningless. "Would you like to have a drink together?" For a moment, Yu-eun kicks herself for her poor English skills and her hasty conclusion that the woman is a Korean expatriate. Unexpectedly, the neighbor steps in closer. The name of the woman in room 801 is Yoon Jin-seo. After having closed her heart for a while, Yu-eun slowly begins to open up to Jin-seo, who is deep and charming the more she gets to know her. Just as their relationship is about to begin in earnest, an unexpected figure intrudes in front of Yu-eun. What will become of this relationship that is close yet not so easy to claim as her own?