This documentary unveils previously unseen footage of Jimi Hendrix's seminal performance at the 1970 Atlanta Pop Festival on July 4th, 1970, playing his greatest hits in front of nearly 500,000 people. With interviews from Hendrix and his fellow musicians, including Paul McCartney and Mitch Mitchell, the insight they provide casts a new light into the musician's personality and genius at the juncture of this important cultural gathering, hailed as the 'Southern Woodstock'.