What's Up

Jae-Hun (Lim Ju-Hwan) is a high school dropout who roams the streets at night with his two best friends. One day, his friends try steal from a drunk guy without Jae-Hun and are caught by the police. He tries to rescue his friends and gets involved in an accident that leads to the death of a stranger. A while later, he decides to go to university to study acting. Park Tae Yi (Kim Ji-Won) comes to Seoul to take an audition for entry into in the university. She lives in the countryside with her grandfather, and inherited her musical talents from her father. Ha Do Sung (Daesung) is the famous rock star Hades who presents himself by hiding his identity through a mask. Because of his secret family background, Do-Sung can't reveal his real identity, so he tries to live quietly without drawing attention to himself and joins the university. Kim Byeong Gun (Jo Jung-suk) is the odd one out in his family of businessmen, wishing to pursue a career in musicals - despite his fear of performing in front of others. Eun Chae Young (Jang Hee-jin) is the experienced actress who wants to prove that she has talent and not just a pretty face. Already Oh Doo Ri (Lim Ju-eun), is a talented actress who prefers to spend her time playing first-person shooting computer games than rehearsing. These young adults end up together in the musical department of Haneul Arts University, and find themselves under the guidance of unconventional professor Sunwoo Young (Oh Man-seok). So they get a chance to learn what it is to be a 'star,' and to prove to the people around them that they can succeed in their chosen path.