Equal parts dark and uplifting, this compelling drama follows the lives of six freshmen as they cross paths and come together during the most important time of their lives. Jang Jae Hun is a high school dropout who roams the streets at night with his dubious best friends. He accidentally causes an accident that leads to the death of a stranger, who turns out to be singer Park Tae Hee's father. Park Tae Hee lives in the countryside with her grandfather, where she hones her talents as a musician. Meanwhile, Ha Do Sung composes songs in anonymity as rock star HADES. Having been abandoned at a young age by his ambitious mother, he tries to live quietly without drawing attention to himself. Kim Byeong Gun is the odd one out in his family of businessmen, wishing to pursue a career in music despite his debilitating fear of performing in front of others. Eun Chae Young is an experienced actress with a desire to prove herself on the musical stage, rather than as a movie actress with a pretty face. What she doesn't expect is to be challenged by Oh Doo Ri, an equally talented actress who would rather spend her time playing first-person shooter computer games than rehearse. These young adults end up together in the musical department of Haneul Arts University, and find themselves under the guidance of unconventional professor Sun Woo Young. With each passing day, they learn what it is to be a real star, and to prove to the people around them that they can succeed in their chosen paths.