The new synopsis for Source Code is essentially the entire set up for the main character, so don’t read it if you consider that sort of thing a spoiler. Suffice it to say that this movie has great sci-fi potential both from the pedigree of the wacky Brit who gave us Moon and from the plot description below. It seems to expand on playing with time and reality in ways that were only hinted at in Moon. In short, it sounds great. The beefy synopsis from the American Film Market: