Eunho Cha is, without a doubt, the biggest outcast at school. He spends his days avoiding bullies and daydreaming about his crush. He'd give anything to be popular, so when he discovers a face editing app called Icing, he spies an opportunity. With Icing's help, Eunho now looks like a superstar... or at least Ganzi Monster (GM), his online alter ego, does. But just when GM and his dance videos are starting to get popular, someone discovers his secret, and Eunho's days of being invisible are about to come to an end...