Robert Lansing plays an astronaut who has been chosen to command a 40 year long flight to another solar system and back. He accepts this mission because he has no one that will miss him--no wife or family--plus he will be in suspended animation the whole time, so it isn't like he'll be bored or age during this long flight. However, in the interval between his being chosen and the flight taking off, he meets a pretty young lady (Marriette Hartley) and they hit it off. However, their relationship is obviously doomed! And, when the flight returns, there is a twist--one I anticipated from almost the beginning of the show!! Still, the episode is pretty interesting and is different, so it's worth seeing--just don't expect it to be among the series' best.