Plot
In September 1890,[a] racing jockeys from all over the world flock to the United States to take part in the Steel Ball Run, a cross-country horse race from San Diego to New York City with a fifty-million dollar grand prize. A paraplegic named Johnny Joestar enters the race to learn about the mysterious Spin ability of a former Neapolitan executioner named Gyro Zeppeli, who temporarily restored Johnny's mobility after one of his steel balls hit Johnny. Though they begin the race as rivals, Johnny and Gyro become friends as they travel through the wilderness while fending off various assassins, terrorists, outlaws, and other violent competitors. Although the Steel Ball Run is organized by the eccentric promoter Steven Steel, United States President Funny Valentine has engineered the race to serve as a front for collecting the scattered pieces of a 1900-year-old corpse known as the Holy Corpse (heavily implied to be the body of Jesus Christ). Valentine intends to reassemble the Corpse and gain limitless power through it on behalf of his nation, having already obtained the Corpse's heart.

(source: Wikipedia.com)