Biography of Jackie Robinson, the first black major league baseball player in the 20th century. Traces his career in the negro leagues and the major leagues.

Among the travelers of varied backgrounds that meet and interact on one night at Union Depot, a metropolitan train station, are Chick and his friend Scrap Iron, both newly released from prison after serving time for vagrancy. Hungry and desperate for a break, Chick fortuitously comes across across a valise abandoned by a drunken traveler. In it he finds a shaving kit and a suit of clothes with a bankroll, which help transform the affable tramp into a dashing gent. After buying himself a meal, Chick seeks some female companionship among the many hustlers who walk the station. He propositions Ruth Collins, a stranded, out-of-work showgirl and takes her to the station's hotel.

A country bumpkin becomes a singing sensation on the radio.