It’s 1903, and Harley-Davidson is entering the spanking new motorcycle market. Of the hundreds of fledgling brands, the bike to beat is Indian, and Harley has the company in its crosshairs. But a decade later, Harley is on the defensive, scrambling to distance itself from the deadly sport of board track racing and solidify its image as a respectable brand. Indian has its own image problem when Mexican rebel leader Pancho Villa starts leading charges on a Powerplus model. But when the U.S. sends General Blackjack Pershing to hunt Villa down, Pershing’s troops are riding Harleys. But World War I proves a decisive turning point as both companies fight their way closer to the top of the motorcycle world.