Noah's Ark is essentially The Matrix without the machines. It's the story of a creator of a technology that allows the consciousness of individuals to be downloaded into a simulated environment in the event of an apocalyptic event.
What's interesting and perhaps frustrating for the reader is that the author phrases everything as if staging a TV show. I happen to like short chapters, but the author uses them with cliffhanger endings that aren't necessarily picked up. Another interesting choice is to alternate narratives, although again this is a questionable decision, since I found myself more interested in one over the other. As the story progresses, you learn that the first character you meet, Alex, is the creator of the technology, and that everything you read is his experiences in his own creation. These chapters tend to be repetitive rather than engaging, filled with foreboding moments and guilt over how he treated his family in the crisis that led both characters to their present circumstances. The author intended to phrase much of this arc in the vein of Richard Matheson's classic I, Legend.
The other character is Michael, who at first appears to be in a Twilight Zone type experience, trapped in a nightmarish confinement. Following this arc was easier and more engaging, and in truth it's this one that drives the story and informs the later developments.
There is much to be learned here as a first experience with the author. He tends to emphasize descriptive passages, relying on them at times in a strict contrast to the existential nature of the twin narratives. This can be jarring, as the readers who enjoy one or the other are naturally exclusive to each other.
The concepts aren't really the problem, whether or not you're familiar with them, have enjoyed them elsewhere (I would also include the film Source Code as relevant material to this discussion). This particular reader found the author's approach to the material a little hard to follow, but then I don't tend to read science fiction. I confess to have been drawn to the book mostly to see how it would approach the title, only as a reference as it turns out and not even all that metaphorically. Alex's creation is housed in something called the Ark, a giant station in space. In a sense, that's much like Noah's Ark, and the fact that there are two of a kind (of a sorts) running around in the story is also familiar to the biblical story.
A lot of my reaction is based simply on the fact that almost none of this material was approached from a vantage point that I found compelling. Readers who like Matheson or want to read something like the Twilight Zone in prose will probably enjoy this much more than I did. I wanted to see a more dynamic presentation of the story, where the author helped the reader know that they knew more than the characters did. When that isn't the case, I don't find myself drawn into the narrative. Instead, and this I think is the key difference between film and literature, I find myself alienated.