On an ordinary night, three teenage friends—Hernán, Chiri, and Colo—meet up in an apartment to smoke, laugh, and pull one of their usual pranks: the pennant strategy. The idea is simple: to confuse Colo by making him think his door is a different one, hanging a Boca Juniors pennant as a false signal. But what begins as a harmless joke turns into tragedy when the plan goes awry and a mix-up leads to Colo being shot while trying to enter the wrong apartment.