SolarmovieOne

Watch Bad Boy Symphony online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

Young criminal Lei, after failing his repeated attempts to escape from prison, joins a classical music ensemble, taught by a teacher who is helping the criminals there turn over a new leaf by preparing them for a music contest. Unfortunately for Lei, he finds out that his bandmates are newbies when it comes to music.