Offstage Elements (2019) on Netflix

Plot summary

For over ten years the five middle-aged men of Brass Angel have played heavy metal together, with Vik as lead singer and manager. After treatment for advanced testicular cancer he returns to his bandmates in remission and leaves his bad-boy reputation behind. He tells the band's longtime fans and the other members that he has become a devout Christian. Vik's bandmates who are dark and demonic resist the change and the band's nitty-gritty followers also object. He wants to bring his faith and the band together and finds that hard to do since each man is fighting his own troubles.