It's time for Jesus to attempt his second coming, but linear time progression doesn't apply to extra-spatial deities, so he ends up coming "again" long before the first time – the Jurassic period. Once he arrives, expecting to see a bunch of human beings who've been waiting for him for two millennial seasons, he is surprised to find himself in a weird civilization full of thunder lizards.

Jesus goes into Predator mode, arming himself to the teeth and slaughtering them wholesale, trying to find someone who's capable of nailing him to a cross so he can get back home, however, dinosaurs don't have thumbs. What they do have is the "hum," a magical frequency capable of shaping the world. They have mythical metals. They have a sensible social contract. They have a bizarre, but seemingly decent civilization going.

Mammals however, are the most disgusting, rotten, violent things imaginable, and they seem to be evolving into something worse with the help of a little cosmic power. Something has been providing them with products that shouldn't be invented for another billion years or so, from the as-seen-on-tv catalog, and they're taking full advantage of it. Who is behind this forced evolution, and what could they stand to gain? Is heaven full of heroes, or gibbering lunatics?

It's up to J.C. to set things right and stop the apocalypse and figure out whether the universe really should be run by a bunch of insane deities, or whether it's better to wipe out heaven and let them sort it all out themselves! Action, adventure, insanity and good ol' fashioned heresy!