'Transformers One' is an animated origin story with a light touch

The Transformers franchise has been around for decades, and it's brought us many toys, TV shows and movies. Now, in the new animated film Transformers One, the origin story of Optimus Prime and Megatron finally gets told. With a voice cast that includes Chris Hemsworth and Brian Tyree Henry, the movie hopes to offer a fresh entry point for the long-running franchise.