Australia, December, 1956: The Melbourne Summer Olympics are underway. Among the international cadre of world-class athletes is the Hungarian waterpolo team— an emerging powerhouse in the sport led by star player, Ervin Zador. Though the defending champions from the previous Olympic Games, tensions are high from the start— just two weeks prior, anti-communist protests in Budapest led to a countrywide Hungarian Revolution that was brutally suppressed by the Soviet Union, leaving over 15,000 people killed or executed. Going into the semi-final round, when Hungary is matched with the Soviet Union, an epic showdown take places. Fighting to defend not only their title but for Hungary, what followed is now known as "the Bloodiest Game in Olympic History."