The year is 1988.  Floods of teenagers flock to a Midwestern heavy metal concert despite controversies sparked by unidentified Satanists on a murder spree and the region’s fearmongering Bible Belt.  A trio of rowdy friends (Alexandra Daddario, Maddie Hasson, Amy Forsyth) have a run-in with a group of aspiring metal musicians (Keean Johnson, Logan Miller, Austin Swift).  Both parties have a rocky start with each other, but the head-banging camaraderie in the air is enough…