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.
Towani一家乘坐的星际巡洋舰在恩多卫星上坠毁了。Towani家的爸爸和妈妈和他们的两个孩子Mace与Cindel失散了。伊渥克族人——恩多卫星上的土著——找到了这两个孩子。尽管孩子们与伊渥克族的交流起初非常困难,Mace和Cindel最终还是说服了伊渥克族人帮助找寻他们的父母。