An alien expedition is boldly going where no aliens have gone before: Earth! Taking on human identities as the Solomon family, the visitors settle in Rutherford, Ohio, in order to study humankind. But they're in for a culture shock of astronomical proportions as they encounter our planet's bizarre ways. Stranger still are their new physical forms, which are constantly throwing up surprises like puberty and passion - the latter especially when High Commander Dick Solomon becomes hopelessly infatuated with his human co-worker. With sophisticated satire and wild farce, Third Rock From The Sun offers a hilarious look at our world from an outrageously new point of view. This set contains all 20 episodes from the sixth and final series. As their mission on Earth comes to a close, the Solomon's are summoned back to their home world. But after growing accustomed to Earth and their relationships with humans, can they leave it all behind?