影片改编自艾拉·莱文的同名小说，讲述1968年著名恐怖片《罗斯玛丽的婴儿》的前传故事。

　　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.