Rai has been secretly crushing on her childhood friend Dogyeong for years. To hide her feelings, she pretends to be a die-hard fan of the K-pop group DIMPLE, especially of Neulchan, her "ultimate bias." It's all just fun and games to make Dogyeong a little jealous... until Neulchan suddenly transfers to her school. With her fake idol crush now a real part of her life, her friendship with Dogyeong starts to spiral. One fake crush, and one real crush—can Rai keep up the act, or is her secret about to come out?