In 2017, the fittest athletes on Earth took on the unknown and unknowable during four of the most intense days of competition in CrossFit Games history. Experience all the drama as top athletes resembling chiseled Grecian gods descend on Madison, Wisconsin, to face a series of trials. Emotions run high as a throng of Australian athletes rise to the top. The film also acknowledges and explores the topic of performance-enhancing drugs in the sport, with insights from CrossFit employees and athletes. By the end of the competition, some learn tough lessons and some learn that they’re even stronger than they realized. The best among them enter the pantheon of CrossFit giants and earn the right to call themselves the “Fittest on Earth.”