Kong Que, who knows nothing about music, is an idol singer known for his all-round singing and songwriting skills. The reason is Hu Li, who sings for him behind the scenes. Hu Li has a very high musical talent, but the scar on his face makes it impossible for him to stand in front of the stage. In order to make money to treat his hospitalized mother, he was willing to give up his musical dream and signed a huge contract to stand behind the scenes as Kong Que's substitute singer. Just when everything was calm, a mysterious person revealed the secret of the substitute singer. The huge penalty for breach of contract and many public opinions forced Hu Li into a dead end. At this time, the appearance of Kong Que's opponent Ji Hetian changed Hu Li's tragic fate. With his own efforts and the help of his friends, Hu Li finally bravely stood on the stage and regained his dream. However, behind this beautiful scene is a bigger conspiracy...