Yes, that’s really what it’s called. There’s an alternate title, “Voyage of Discovery”, but that’s similarly meaningless.
Keir Dullea is a young man with a gigantic moustache in the Amish-type religious peasant community of Cypress Corners. For some reason he’s named “Devon” although everyone else, bar his friend and love-rival Garth, has an Old Testament name. The initial setup is interesting enough: Devon has been forbidden from marrying the woman he loves, Rachel, because the match has been deemed genetically undesirable, and the Word of God that the people obey appears to be coming from a supercomputer. In an even more interesting twist, Devon later discovers that it isn’t even that: the community elders record the divine pronouncements on micro cassettes and the computer is nothing more than a playback machine. Devon of course rebels and is cast out of the community only to discover— surprise!— that they are all on a generation ship, that there are thousands of other communities on there, and that the ship is off course and going to collide with a nearby “solar star” (tautological as that sounds), since the bridge crew are all dead and the bridge in ruins. There’s a supercomputer on the ship, played by a man with an excellent beard, but of course it has a lot of plot-convenient gaps in its memory. Devon, Garth and Rachel must now embark on a quest to save the ship and humanity and et cetera.
As a story, it’s not too bad. It’s a bit obvious (will Devon rebel, or will we spend sixteen episodes watching him raise barns and plough fields?) but then a lot of setup episodes are. The production values are pretty good for 1973, even if the CSO sequences haven’t aged well. I actually quite liked the uneasy relationship with technology in the Amish-type community: you expect the twist to be that the elders all know God is a computer, but the further twist that the computer doesn’t work and the elders are actually doing a different technological hack, was cleverer.
The main problems so far have to do with production decisions, dialogue, and performances. It would have been much more effective to shoot the early sequences on location (Black Creek Pioneer Village, not too far from the studio, had been running since 1960), which would have made the contrast with the spaceship sets more dramatic and given the whole thing a real sense of a ship big enough that people can live in it for generations.
As for the script, oh dear. The dialogue was mostly stilted pronouncements along the lines of “why must we obey the word of God?”, and the actors all spoke it with forced-sounding emotion, as if everyone was reading off cue cards. There’s barely a moment of naturalistic acting in the story. Also, the face Keir Dullea pulls when Devon accidentally sets off an inter-ship transporter and is hurled up the corridor is inadvertently hilarious.