Yun Kun is a student who is about to graduate from the Conservatory of Music. He almost went bald because of his graduation homework. He had no choice but to relax and find inspiration in the recently popular musical instrument game recommended by his friends. Unexpectedly, he only played for a few days and because he had not had a good rest for a long time, he lost consciousness due to a heartbeat. When he woke up, he found that he had turned into a xylophone. . .