An impromptu goodbye party for Professor John Oldman becomes a mysterious interrogation after the retiring scholar reveals to his colleagues he never ages and has walked the earth for 14,000 years.

14,000 year-old "Man from Earth" John Oldman, now teaching in northern California, realizes that not only is he finally starting to age, but four students have discovered his deepest secret, putting his life in grave danger and potentially destroying the world's most popular religion.

Biographical film story about the first Russian space explorer, inventor scientist, rocket-maker K. E. Tsiolkovsky.