Ha Rip is a successful composer, and all of his songs top the charts and win many awards. One day, he is informed that his 10-year contract with the devil will soon terminate, and as per the contract, the devil will take Ha Rip's soul. And he gets involved in strange situations. What is the true identity of Ha Rip?

I Gyeong is a nameless singer-songwriter who has a miserable past. She goes to Ha Rip after finding out he released the song she wrote, and Ha Rip realizes that all his music are stolen and inspirations from others. Out of guilt, Ha Rip wants to terminate the contract. However, there is a price to pay for.

I Gyeong decides to quit music and to find a new dream. Meanwhile, Ha Rip tries to find his replacement to carry through on his promise with Tae Kang. He manages to find someone who is desperate to be a musician and introduce the person to Tae Kang. However, Tae Kang says that he can't accept the person as Ha Rip's replacement.