Ryan is a teenager who lacks the ability to speak. One day, Ryan falls off a bridge and he finds himself transported to a strange fantasy world where he encounters his Grandpa Randolph and a pretty girl named Melanie; together, Ryan and Melanie learn to help one another with their problems, and they both discover the wisdom they can gain from elders like Grandpa Randolph.

10,000 Days ago, Comet 23 struck Earth with the magnitude of all the nuclear weapons in the world sending the planet into a deep freeze. Now, 27 years in the future, those who survived are locked in an epic battle of life or death.