Which makes for a good plot, imho. I don't think the issue with the movie was a bad plot. I think the issue was completely in it's execution and, more specifically, the dialog. The father/son relationship was so awkward as played out with the dialog. The random conversation about his motorcycle just felt so out of place. Sam's conversation with Quorra about the sunlight, etc seemed like it was written by a fifth grader.
The first half of the movie was filled with what felt like obligatory CG action sequences that just <i>had</i> to be a part of the movie. Then we get a random interjection with the club owner character that was so obviously a rip of 5th element and the wackiness of the show host from that movie. Finally, the latter half was stuffed with a bunch of bad dialog in an attempt to finally fill out the plot and felt so completely half ass.