"What... a... darn... stupid... contraption!" The 1st Columbia San Francisco Bicycle Race seems like the perfect opportunity for Albert Overman to impress the nation with his revolutionary design. But when a rival manufacturer hires two goons to intercept him, it's up to Lucky Luke to save the day once more. The lonesome cowboy will find himself swapping stirrups for pedals as he heads west in the saddle of Overman's invention. Will he make it to the starting line in time, or will the dawning of the modern age be stopped by ruthless thugs, stubborn hillbillies, and wary Apache? And what will Jolly Jumper think of his cowboy changing steeds?