The documentary includes interviews with many of Ronnie James Dio's friends, family, and musical collaborators, including Richie Blackmore, Vinny Appice, Geezer Butler, and Rob Halford. Through these interviews, we learn about Dio's life and career, from his early days as the lead singer of the doo-wop group Ronnie and the Redcaps, to his time in classic rock band Elf, to his work with Blackmore in Rainbow, and his tenure as the frontman of Black Sabbath.
The film also explores Dio's influences and inspirations, including his love of classical music and his interest in the occult. We see how Dio's music evolved over time, incorporating elements of heavy metal, hard rock, and classical music to create a sound that was both powerful and unique.
Throughout the documentary, we see how Dio overcame challenges and setbacks, including his departure from Black Sabbath and the struggles he faced with his health later in life. Despite these obstacles, Dio remained focused on his music and his fans, and his perseverance and dedication continue to inspire musicians and fans to this day.
Overall, Dio: Dreamers Never Die is a moving tribute to a true musical icon and a testament to the power of belief in oneself.