"Entering Korea's top prestigious university is a breeze if you are equipped with perseverance, study skills and a careful strategy" Kang Seok-ho, a former juvenile delinquent-turned-lawyer, is requested to take care of the liquidation of Byeong-mun High School. Looking at the difficult situation the school goes through, Seok-ho decides to save the school and the one and only solution he comes up with to keep the school from breakup is produce as many as Cheon-ha University(CU) applicants. Seok-ho expects that if the school continues to increase the number of CU applicants every year, more students want to apply for the school, and that helps Byeong-mun overcome its financial difficulties. He is allowed to set up a special class on condition that he would bring 5 students in three days and raise their grades to the point where they can enter Cheon-ha University without difficulty. Meanwhile, a group of creditors barges into Hwang Baek-hyeon's place. Baek-hyeon, a student of Byeong-mun high, is a juvenile delinquent who has no interest in study. Out of sympathy, Seok-ho mobilizes all the knowledge he can to save Baek-hyeon's family. He emphasizes the importance of learning to Baek-hyeon by saying "If you don’t want to be deceived by others, all you can do is study, study and study!!!" Full of great anticipation, Seok-ho embarks on the special class. He makes the five students live together and invites high-profile instructors. Now the journey to reviving the troubled Byeong-mun high begins!