Aaron Greenfield and the Time Machine

Twelve-year-old Aaron Greenfield and his trustworthy dog Sparky team up with best friend Sarah Summers to travel back in time, witness history, and change some of the harsher realities embedded in America's past. Along the way, they meet several famous Americans. While changing history may be easy, Aaron and Sarah soon realize that forecasting the exact consequences of their actions is by no means a predictable science!