Klitschko tells the captivating story of the boxing world's most famous brothers: Vitali and Wladimir Klitschko. From the socialist drill of their childhood in the Ukraine, and their first successes as amateurs, to their move to Germany and subsequent rise as international stars and holders of the championship titles of all five boxing federations, their matches draw audiences in more than 100 countries around the globe. Along the way they experience defeats and setbacks, low points and triumphant comebacks as well as conflicts with each other. Exciting conversations with companions and opponents, including the very first interview with the Klitschkos' parents, give insight into their personal lives, plus never-before-seen footage of the draining preparations for a fight, and the spectacular boxing matches. Director Sebastian Dehnhardt composes an intimate and fascinating portrait of two exceptional athletes who are, before all else, brothers.