Isol Yeon, the school’s top student and biggest outcast, gains the ability to see people’s true feelings about her through the Hashtag Lens, which she acquires after making the ten-quintillionth wish. Through the lens, she discovers that Shinu Seong, her former middle-school best friend she had a painful fallout with, has tagged her as “#my_first_love_and_trash.” Can Isol mend their broken relationship and overcome the pain of being betrayed by her first love?