Folk music's timeless supergroup Peter, Paul and Mary have spent decades entertaining people all over the world. In 1986, they performed all of their greatest hits during their 25th anniversary concert, and 19 songs are included in this concert footage. Some of the selected songs are "Blowin' in the Wind," "Puff, the Magic Dragon," "Leaving on a Jet Plane," "If I Had a Hammer," "This Land Is Your Land," and "Where Have all the Flowers Gone?"