The Dust Factory (2004)

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.