Four astronauts have to stay 1000 days in a space station around Earth in order to prove that a trip to Europa, one of Jupiter's moon, is possible. The experience goes well until something happens on earth.

Fourastronautshavetostay1000daysinaspacestationaroundEarthinordertoprovethatatriptoEuropa,oneofJupiter'smoon,ispossible.Theexperiencegoeswelluntilsomethinghappensonearth.