A seamstress recalls events leading to her act of peaceful defiance that prompted the 1955 bus boycott in Montgomery, Alabama.

Constructed from a wealth of archival footage, the documentary follows Dr. Martin Luther King, Jr. from 1955 to 1968, in his rise from regional activist to world-renowned leader of the Civil Rights movement. Rare footage of King's speeches, protests, and arrests are interspersed with scenes of other high-profile supporters and opponents of the cause, punctuated by heartfelt testimonials by some of Hollywood's biggest stars.