What happens when your school gets closed down and you're forced to join your brother's school. But your brother isn't just any ordinary brother. He's the leader of Bangtan. He's Kim Namjoon a.k.a. Rap Monster(it's sounds kinda intimidating, right?) What happens when you realise that your brother isn't exactly who you think he is when he beats up your old childhood friend, Onew. Or is it the other way around?