The Haight-Ashbury region of San Francisco constitutes little more than a square mile of city space, but a four-year period in the late 60s immortalized the area as one of the focal points of counterculture during the "free love" era. Folk and rock music were central to this flowering of American culture, in particular a musical style known as the "San Francisco Sound," performed by acts including The Grateful Dead, Country Joe and the Fish and Big Brother and the Holding Company. Haight-Ashbury activity peaked during the summer of 1967, when nearly 10,000 people converged in the said area to enjoy free love, drugs, communal living, and most of all, music. This documentary travels inside of the said historical phenomenon and profiles it.