Yoori has feigned the perfect high school life in order to put her long distance brother's mind at ease that she's living her best life without him. That includes good grades, good social life, and a good boyfriend. Her brother suddenly goes home to visit her, but little does he know she has none of what she pretended to have for years. Now she has to somehow make her pretend life real with the first step of asking her fake boyfriend out, Choi Beomgyu, the boy next door. What she doesn't expect is for her life to completely turn upside down with a simple of question of, "Will you be my boyfriend?"