The World the Flesh and the Devil (1959)

Ralph Burton is a miner who is trapped for several days as a result of a cavein When he finally manages to dig himself out he realizes that all of mankind seems to have been destroyed in a nuclear holocaust He travels to New York City only to find it deserted Making a life for himself there he is flabbergasted to eventually find Sarah Crandall who also managed to survive Together they form a close friendship until the arrival of Benson Thacker who has managed to pilot his small boat into the citys harbor At this point tensions rise between the three particularly between Thacker who is white and Burton who is black