A behind the scenes look at popular folk music trio Peter, Paul & Mary. Accompanying the group on tour across the country, Hooper captures members Peter Yarrow, Paul Stookey, and Mary Travers rehearsing and performing as well as appearing at civil rights and anti-war demonstrations.
| Actor | Role |
|---|---|
 Peter YarrowHimself | Himself |
 Paul StookeyHimself | Himself |
 Mary TraversHerself | Herself |