After a timid milkman knocks unconscious a boxing champion who was accosting his sister, he decides to take up boxing himself in order to impress a beautiful nightclub singer.After a timid milkman knocks unconscious a boxing champion who was accosting his sister, he decides to take up boxing himself in order to impress a beautiful nightclub singer.After a timid milkman knocks unconscious a boxing champion who was accosting his sister, he decides to take up boxing himself in order to impress a beautiful nightclub singer.