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.

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 (Armin Mueller-Stahl) and a pretty girl named Melanie (Hayden Panettiere); 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.