Deep in space, a research craft encounters a near-deserted spaceship perched on the edge of a black hole, a dense patch of matter which is one of the Universe's great mysteries. On board the ship is a long-lost scientist who has a desire to see what lies on the other side of the black hole - and will stop at nothing to achieve his goal. Anthony Perkins, Joseph Bottoms, Ernest Borgnine, Maximilian Schell and Yvette Mimieux star in Disney's attempt to rival the success of 'Star Wars'.