The boys are forced to share a room together and they instantly dislike each other, with them engaging in several heated disputes all the time. Completely enchanted by her, he agrees to his father's wishes when he discovers that she secretly attends Moorim Institute without letting her father know.

Chi-ang's father also wants him to go to Moorim Institute, but Chi-ang refuses to go until he meets Shim Soon-deok ( Seo Ye Ji), a sweet, confident young woman who works hard at several jobs to care for her blind father. Spoiled and selfish, he acts like he owns the world, yet hides his own wounds: he is an illegitimate son who was born from a Korean mother.

Wang Chi-Ang ( Lee Hong Bin) is the son of Wang Hao, the president of China's largest enterprise groups in Shanghai. As the public starts to hate him, he decides to come to Moorim Institute in the end in hopes that he would be cured. Considering him more trouble than he is worth, Shi-woo's CEO tries to get rid of him by framing him in a scandal with a female rookie idol. The only possible hope comes from a female fan named Hwang Sun-ah ( Jung Yoo Jin) who told him to go to Moorim Institute and have Dean Hwang, her father, heal him. His rise in popularity and fame made him become arrogant and prickly in nature, but he has a serious problem: he is suffering from painful hearing loss that doctors have not been able to determine the real cause of his hearing loss and the doctors were unable to find the cure. He also happens to be an orphan with hardly any recollection of his past or true identity. Yoon Shi-Woo ( Lee Hyun Woo) is the leader of the South Korean idol group Mobius.

Moorim school saga of the brave cast