If you didn’t know this 2016 film was a documentary, it’d be easy to read its synopsis and come away expecting a satire like M*A*S*H or This Is Spinal Tap. In December 1994, Iron Maiden front man Bruce Dickinson and the backing band for his solo project performed in Sarajevo, which was largely cut off from the outside world by the Bosnian Serb military—their siege of the city would ultimately last 1,425 days and cause tens of thousands of casualties. Dickinson and his band came knowing that Sarajevo was in peril, but it wasn’t until they arrived that they really grasped the severity of the situation—or that rock-star status wouldn’t protect them from snipers. Though the concert (and the musicians’ life-altering journey to play it) was the catalyst for the film, it provides a portal into a broader and even more compelling story—about the fans who endured the siege, and who’d cultivated a thriving underground arts community in Sarajevo despite constant danger, grief, and loss.