In 1986, in the heart of the Cold War, a young idealist named Michael Tisserand joined up with a group of more than one thousand people, including Martin Sheen and Madonna, in a walk across the United States. They were protesting nuclear proliferation and spent nine months marching from Los Angeles to Washington, D.C. Although the walk was supported, it was nearly derailed in the desert of California only a few weeks into the odyssey. Hear how Michael and some brave marchers continued, and if he thinks he made a difference.