Nobu, a japanese girl, lives alone with her dad. She's a very cute and bright girl but her biggest imperfection would be her intelligence. Yep, she tried many different high schools but in the end, they all rejected her. One day, her dad found a solution but Nobu wasn't too fond of it. Her dad finally won and she found herself in a very luxurious school -- until she found her classroom, in the basement. Nobu also found out that her class was the worst of all -- not only in studying, but in attitude too. The students looked tough, strong and very violent ; the students were ALL boys (obviously, kekekeke~) except for one girl, her name was Bang Hae Mi. She looked tougher than the boys but Nobu hopes they will be good friends because they're the only girls in the class. Amongst all those scary monsters, there was one weird boy... His smile was so bone-chilling! And unfortunately, Nobu has to sit beside this creepy smiling boy..

Will Nobu survive in this crazy class?