A television documentary arranged by John Grierson. The story of the vast task of United Nations Educational Scientific and Cultural Organisation known as UNESCO in bringing aid to the war-damaged and backward countries of the world. The programme also covers the great scheme for the reclaiming of the unexplored Amazon basin. The story told by John Grierson, Ritchie Calder, Jacquetta Hawkes, and Dr. Carneiro. Introduced by J. B. Priestley.