Plotline: The government is sending a whole bunch of people to another planet to "prepare for Armageddon." I recall the trip taking a very long time (on the order of maybe 30 years). Also, one of the people dies and their death is investigated throughout the show.
Start Date: Approximately 2010, I'd say.
Platform: No idea.
Unfortunately, this is the extent of all the details I can recall. I'll make edits if I remember any more!