Next stop: Mars. But before NASA is ready to send a manned expedition to the Red Planet, a big question is how the astronauts will react to living on another planet. Therefore, six volunteers are selected to live for one year in a sealed space station no larger than 100 square meters in Hawaii. A realistic simulation with freeze-dried food, a forty-minute delay on the radio and no walks outside without a spacesuit. 'Red Heaven' is their collective video diary. A social and psychological experiment with natural crises (and a romance!), filmed and narrated by the astronauts themselves.