U.S. Army Captain Clark Allen gains attention by walking back and forth, the length of Japan, gambling with U.S. servicemen in order to raise funds to rebuild an orphanage. Suspicious of Allen's motives, a Japanese newsman, Hiroshi Kitabayashi, traces the American's background until he discovers the motive behind Allen's long walk.

石原裕次郎が情熱を注ぎ、莫大な時間と労力を費やして完成させた大作映画。子供たちのため、1300キロの道を歩くことを決意したフリーの報道カメラマンの物語。戦争と人間の本質に迫る。