Certainly! Here’s a paraphrased version of the movie description:

The film follows the journey of a young musician who rises from humble beginnings to achieve fame and success in the music industry. Along the way, he faces numerous challenges and personal struggles, but his passion and determination drive him to overcome these obstacles and reach the pinnacle of his career.

Regarding the second part of your question, Dr. Dre became the first hip-hop artist to reach billionaire status, largely due to the sale of his company, Beats by Dre, to Apple in 2014.