Su Chen, the talented lead singer of the former band "Stardust", sealed up his music and dreams after the unexpected death of his beloved wife Wan Yin, and became a full-time dad raising his daughter Su Nian alone. In order to heal his daughter's psychological trauma caused by witnessing the tragedy, he entered the world's largest immersive virtual reality world-"Ingard" as "Chen". He originally just wanted to work in the virtual world to make money and pay for his daughter's expensive "sunshine therapy", but he accidentally played a melody containing real emotions on a worn-out virtual guitar.
This ray of sadness and love from the real world awakens a mysterious existence in "Iongard" - the data elf "Zero". Under her guidance, Su Chen discovered that her music could shake the underlying rules of the virtual world and create miraculous scenes. From then on, during the day, he was a gentle dad who washed his daughter's hands and made soup, and at night, he was a mysterious legend who set off a musical storm in the virtual world.
At the same time, in the real world, Lin Yuzheng, who runs a classical musical instrument store, met Su Chen because of a dusty old guitar. Not only did she see the story hidden in Su Chen's music, but she also tried to repair his broken reality bit by bit with her warmth and professionalism.
One is the mysterious muse who leads him to the altar in the virtual world, and the other is the confidant who heals his scars in real life. Under the intertwining influence of two worlds and two women, Su Chen re-played the song of life that she once thought would last forever, not only for her daughter, but also for herself.