When scientists a hundred years into the future discover a "duplicate" Earth on the other side of the sun, the stage is set for tense, science fiction adventure and suspense when the Western nations of Earth set up an expedition to reach the new planet. All goes according to plan until the spaceship makes a crash landing on a planet some three weeks earlier than expected. Have the space travelers actually returned to earth or are they on some strange mirror-image world where they must prove who they really are or die trying? This imaginative space adventure offers a journey few will ever forget.