Pavilion 22 deals with one of the darkest episodes of recent Croatian history - the events in the infamous pavilion at the Zagreb Fair in 1991. The film reveals a completely unknown and dark side of the events that took place within the Zagreb Fair complex in the fall of 1991 when war broke out. Originally conceived as a center for the mobilization of police reserve forces, the pavilion soon became a transit camp for all suspects, mainly of Serbian nationality, from where many were taken to Pakračka Poljana by the so-called Mercep unit.