Kang Ha is a scholarship student at Joosin High School, a prestigious school only for wealthy heirs and rarely scholarship students. has a minimum number of scholarship holders, and his brother, In-Han, was one of them until he was killed by someone and that is the reason why Kang Ha studied and got top marks in the high school qualification test, to find out who murdered his brother. and he is still suspected of being Rin-a, one of the upper class boys.