Eunhyuk is a dancer at school who is adored by almost everyone. He might look cool and tough but he is actually a softie and lonely inside. He has built an invisible personality wall so that no one could see through him. While Donghae is a straight A+ student who works hard for an overseas scholarship offered by their school. He has no interest in something which is not about his Literature, English, and History books. But what could happen if his boredom results him to try this certain anonymous chatting app and started chatting with a total stranger. or is he?