Douglas Trumbull

A botanist has spent three years aboard the space freighter "Valley Forge" preserving the only botanical specimens left from Earth under huge geodesic domes. When he receives orders to destroy the project and return home, he rebels and hijacks the space craft, killing his fellow crewman and injuring himself. He plunges the ship into the gaseous Rings of Saturn, where he embarks on the loneliest adventure of all with only two drone robots to keep him...

Los Angeles, 2019: Rick Deckard of the LAPD's Blade Runner unit prowls the steel & microchip jungle of the 21st century. His job is to track down and eliminate assumed humanoids known as 'replicants.' Replicants were declared illegal after a bloody mutiny on an Off-World Colony, and are to be terminated upon detection. He wants to get out of the force, but is drawn back in when 6 "skin jobs," the slang for replicants, hijack a ship back to Earth....