Following the 1982 World Cup, Spain opens its doors to the "ultra" phenomenon, which experiences a rapid and increasingly violent expansion. As the decade progresses and Barcelona counts down to the 1992 Olympic Games, rival ultra groups declare an all-out war against one another. The episode focuses on the brutal escalation that culminates in the historic 1991 murder of Frèderic Rouquier, a mysterious young French RCD Espanyol supporter.