After a bandmate and childhood friend struggles with drug and alcohol addiction, three best friends must fight against losing their recording contract.

The goal should be to get their friend sober so they don't risk their recording contract or his life.

What's different about this to say "Bohemian Rhapsody"?

I fixed it.

What sets this apart from films with a similar premise? Bandmate struggling with addiction is fairly prevalent not just in fiction but real life too.

I think what you have could work for a short, but I think for a 90min+ runtime you might need to expand. It's not just about getting him sober for the next gig, it's about them losing their recording contract if he doesn't clean up his act.

Whilst the best friends play an important part, I would say the addict has the biggest arc and the most interesting story.

What is going to set this apart from similar stories? Where's your hook?