The documentary delves into Osbourne's tumultuous upbringing in Birmingham, England, where his family struggled with poverty and he experienced a series of traumatic events, including the death of his father. Despite these challenges, Osbourne found solace in music and eventually formed the band Black Sabbath with guitarist Tony Iommi, bassist Geezer Butler, and drummer Bill Ward.
Black Sabbath quickly rose to fame as pioneers of the heavy metal genre, but Osbourne's rock star lifestyle began to spiral out of control with drug and alcohol addiction. After being fired from the band in 1979, Osbourne embarked on a successful solo career, releasing hit albums such as "Blizzard of Ozz" and "Diary of a Madman."
Throughout his career, Osbourne faced numerous personal struggles, including multiple near-death experiences, legal battles, and health issues, including a Parkinson's disease diagnosis in 2019. Despite these challenges, Osbourne has continued to reinvent himself as a reality TV star alongside his wife Sharon and children Jack and Kelly on the hit show "The Osbournes."
The documentary also explores Osbourne's impact on the music industry and his enduring legacy as the "Prince of Darkness." Through candid interviews with Osbourne, his family, and fellow musicians, "Biography: The Nine Lives of Ozzy Osbourne" offers a revealing and intimate portrait of one of rock music's most enduring and iconic figures.