Watch HDToday. At the downbeat of the new millennium there was no bigger, darker, or more deeply influential hard rock band in the world than KoRn. But for lead guitarist Brian Head Welch, a dream come true was giving way to a raging nightmare of self-loathing and addiction. At the end of himself, he made an even harder decision than leaving KoRn. Told with intimate access to the family and band, this genre-bending documentary delivers unprecedented access to one of rock's most unbelievable stories of restoration.