"Don King: Only in America" is a documentary that explores the life and career of Don King, a prominent boxing promoter known for his flamboyant personality and controversial past. The film highlights his rise from humble beginnings in Cleveland, Ohio to becoming a major figure in the world of professional boxing, promoting legendary fighters like Muhammad Ali and Mike Tyson. The documentary delves into the complexities of King's life, including his legal troubles and the impact of his promotional style on the sport. It provides insight into the business of boxing and the challenges faced by those involved, showcasing both the glamour and the darker aspects of the industry.