Nature Valley TV Spot, 'Be a Powerful Force'

A girl stands alone in an endless green field and takes a bite of her Nature Valley granola bar. As soon as her teeth crunch down on the snack, the cloudy sky grows into a raging storm that incites the most powerful forces of nature -- lightning strikes, snow tumbles into avalanches and geysers and volcanoes erupt. She races through the field alongside groups of wild horses until the storm relents to a calm dusk sky.